19312020

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1$

素因数の和:172

約数の個数: 240

約数和(自身を含む): 75132288

約数和(自身を除く): 55820268

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 52, 54, 60, 63, 65, 70, 78, 81, 84, 90, 91, 105, 108, 117, 126, 130, 131, 135, 140, 156, 162, 180, 182, 189, 195, 210, 234, 252, 260, 262, 270, 273, 315, 324, 351, 364, 378, 390, 393, 405, 420, 455, 468, 524, 540, 546, 567, 585, 630, 655, 702, 756, 780, 786, 810, 819, 910, 917, 945, 1053, 1092, 1134, 1170, 1179, 1260, 1310, 1365, 1404, 1572, 1620, 1638, 1703, 1755, 1820, 1834, 1890, 1965, 2106, 2268, 2340, 2358, 2457, 2620, 2730, 2751, 2835, 3276, 3406, 3510, 3537, 3668, 3780, 3930, 4095, 4212, 4585, 4716, 4914, 5109, 5265, 5460, 5502, 5670, 5895, 6812, 7020, 7074, 7371, 7860, 8190, 8253, 8515, 9170, 9828, 10218, 10530, 10611, 11004, 11340, 11790, 11921, 12285, 13755, 14148, 14742, 15327, 16380, 16506, 17030, 17685, 18340, 20436, 21060, 21222, 23580, 23842, 24570, 24759, 25545, 27510, 29484, 30654, 33012, 34060, 35370, 35763, 36855, 41265, 42444, 45981, 47684, 49140, 49518, 51090, 53055, 55020, 59605, 61308, 70740, 71526, 73710, 74277, 76635, 82530, 91962, 99036, 102180, 106110, 107289, 119210, 123795, 137943, 143052, 147420, 148554, 153270, 165060, 178815, 183924, 212220, 214578, 229905, 238420, 247590, 275886, 297108, 306540, 321867, 357630, 371385, 429156, 459810, 495180, 536445, 551772, 643734, 689715, 715260, 742770, 919620, 965601, 1072890, 1287468, 1379430, 1485540, 1609335, 1931202, 2145780, 2758860, 3218670, 3862404, 4828005, 6437340, 9656010, 19312020]

約数ペア:

[(1, 19312020), (2, 9656010), (3, 6437340), (4, 4828005), (5, 3862404), (6, 3218670), (7, 2758860), (9, 2145780), (10, 1931202), (12, 1609335), (13, 1485540), (14, 1379430), (15, 1287468), (18, 1072890), (20, 965601), (21, 919620), (26, 742770), (27, 715260), (28, 689715), (30, 643734), (35, 551772), (36, 536445), (39, 495180), (42, 459810), (45, 429156), (52, 371385), (54, 357630), (60, 321867), (63, 306540), (65, 297108), (70, 275886), (78, 247590), (81, 238420), (84, 229905), (90, 214578), (91, 212220), (105, 183924), (108, 178815), (117, 165060), (126, 153270), (130, 148554), (131, 147420), (135, 143052), (140, 137943), (156, 123795), (162, 119210), (180, 107289), (182, 106110), (189, 102180), (195, 99036), (210, 91962), (234, 82530), (252, 76635), (260, 74277), (262, 73710), (270, 71526), (273, 70740), (315, 61308), (324, 59605), (351, 55020), (364, 53055), (378, 51090), (390, 49518), (393, 49140), (405, 47684), (420, 45981), (455, 42444), (468, 41265), (524, 36855), (540, 35763), (546, 35370), (567, 34060), (585, 33012), (630, 30654), (655, 29484), (702, 27510), (756, 25545), (780, 24759), (786, 24570), (810, 23842), (819, 23580), (910, 21222), (917, 21060), (945, 20436), (1053, 18340), (1092, 17685), (1134, 17030), (1170, 16506), (1179, 16380), (1260, 15327), (1310, 14742), (1365, 14148), (1404, 13755), (1572, 12285), (1620, 11921), (1638, 11790), (1703, 11340), (1755, 11004), (1820, 10611), (1834, 10530), (1890, 10218), (1965, 9828), (2106, 9170), (2268, 8515), (2340, 8253), (2358, 8190), (2457, 7860), (2620, 7371), (2730, 7074), (2751, 7020), (2835, 6812), (3276, 5895), (3406, 5670), (3510, 5502), (3537, 5460), (3668, 5265), (3780, 5109), (3930, 4914), (4095, 4716), (4212, 4585)]