19994040

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1$

素因数の和:65

約数の個数: 288

約数和(自身を含む): 78427440

約数和(自身を除く): 58433400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 17, 18, 20, 22, 24, 27, 30, 33, 34, 36, 40, 44, 45, 51, 54, 55, 60, 66, 68, 72, 81, 85, 88, 90, 99, 102, 108, 110, 120, 121, 132, 135, 136, 153, 162, 165, 170, 180, 187, 198, 204, 216, 220, 242, 243, 255, 264, 270, 297, 306, 324, 330, 340, 360, 363, 374, 396, 405, 408, 440, 459, 484, 486, 495, 510, 540, 561, 594, 605, 612, 648, 660, 680, 726, 748, 765, 792, 810, 891, 918, 935, 968, 972, 990, 1020, 1080, 1089, 1122, 1188, 1210, 1215, 1224, 1320, 1377, 1452, 1485, 1496, 1530, 1620, 1683, 1782, 1815, 1836, 1870, 1944, 1980, 2040, 2057, 2178, 2244, 2295, 2376, 2420, 2430, 2673, 2754, 2805, 2904, 2970, 3060, 3240, 3267, 3366, 3564, 3630, 3672, 3740, 3960, 4114, 4131, 4356, 4455, 4488, 4590, 4840, 4860, 5049, 5346, 5445, 5508, 5610, 5940, 6120, 6171, 6534, 6732, 6885, 7128, 7260, 7480, 8228, 8262, 8415, 8712, 8910, 9180, 9720, 9801, 10098, 10285, 10692, 10890, 11016, 11220, 11880, 12342, 13068, 13365, 13464, 13770, 14520, 15147, 16335, 16456, 16524, 16830, 17820, 18360, 18513, 19602, 20196, 20570, 20655, 21384, 21780, 22440, 24684, 25245, 26136, 26730, 27540, 29403, 30294, 30855, 32670, 33048, 33660, 35640, 37026, 39204, 40392, 41140, 41310, 43560, 45441, 49005, 49368, 50490, 53460, 55080, 55539, 58806, 60588, 61710, 65340, 67320, 74052, 75735, 78408, 82280, 82620, 90882, 92565, 98010, 100980, 106920, 111078, 117612, 121176, 123420, 130680, 147015, 148104, 151470, 165240, 166617, 181764, 185130, 196020, 201960, 222156, 227205, 235224, 246840, 277695, 294030, 302940, 333234, 363528, 370260, 392040, 444312, 454410, 499851, 555390, 588060, 605880, 666468, 740520, 833085, 908820, 999702, 1110780, 1176120, 1332936, 1666170, 1817640, 1999404, 2221560, 2499255, 3332340, 3998808, 4998510, 6664680, 9997020, 19994040]

約数ペア:

[(1, 19994040), (2, 9997020), (3, 6664680), (4, 4998510), (5, 3998808), (6, 3332340), (8, 2499255), (9, 2221560), (10, 1999404), (11, 1817640), (12, 1666170), (15, 1332936), (17, 1176120), (18, 1110780), (20, 999702), (22, 908820), (24, 833085), (27, 740520), (30, 666468), (33, 605880), (34, 588060), (36, 555390), (40, 499851), (44, 454410), (45, 444312), (51, 392040), (54, 370260), (55, 363528), (60, 333234), (66, 302940), (68, 294030), (72, 277695), (81, 246840), (85, 235224), (88, 227205), (90, 222156), (99, 201960), (102, 196020), (108, 185130), (110, 181764), (120, 166617), (121, 165240), (132, 151470), (135, 148104), (136, 147015), (153, 130680), (162, 123420), (165, 121176), (170, 117612), (180, 111078), (187, 106920), (198, 100980), (204, 98010), (216, 92565), (220, 90882), (242, 82620), (243, 82280), (255, 78408), (264, 75735), (270, 74052), (297, 67320), (306, 65340), (324, 61710), (330, 60588), (340, 58806), (360, 55539), (363, 55080), (374, 53460), (396, 50490), (405, 49368), (408, 49005), (440, 45441), (459, 43560), (484, 41310), (486, 41140), (495, 40392), (510, 39204), (540, 37026), (561, 35640), (594, 33660), (605, 33048), (612, 32670), (648, 30855), (660, 30294), (680, 29403), (726, 27540), (748, 26730), (765, 26136), (792, 25245), (810, 24684), (891, 22440), (918, 21780), (935, 21384), (968, 20655), (972, 20570), (990, 20196), (1020, 19602), (1080, 18513), (1089, 18360), (1122, 17820), (1188, 16830), (1210, 16524), (1215, 16456), (1224, 16335), (1320, 15147), (1377, 14520), (1452, 13770), (1485, 13464), (1496, 13365), (1530, 13068), (1620, 12342), (1683, 11880), (1782, 11220), (1815, 11016), (1836, 10890), (1870, 10692), (1944, 10285), (1980, 10098), (2040, 9801), (2057, 9720), (2178, 9180), (2244, 8910), (2295, 8712), (2376, 8415), (2420, 8262), (2430, 8228), (2673, 7480), (2754, 7260), (2805, 7128), (2904, 6885), (2970, 6732), (3060, 6534), (3240, 6171), (3267, 6120), (3366, 5940), (3564, 5610), (3630, 5508), (3672, 5445), (3740, 5346), (3960, 5049), (4114, 4860), (4131, 4840), (4356, 4590), (4455, 4488)]