21536280

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 240

約数和(自身を含む): 80237520

約数和(自身を除く): 58701240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 23, 24, 27, 30, 34, 36, 40, 45, 46, 51, 54, 60, 68, 69, 72, 81, 85, 90, 92, 102, 108, 115, 120, 135, 136, 138, 153, 162, 170, 180, 184, 204, 207, 216, 230, 255, 270, 276, 289, 306, 324, 340, 345, 360, 391, 405, 408, 414, 459, 460, 510, 540, 552, 578, 612, 621, 648, 680, 690, 765, 782, 810, 828, 867, 918, 920, 1020, 1035, 1080, 1156, 1173, 1224, 1242, 1377, 1380, 1445, 1530, 1564, 1620, 1656, 1734, 1836, 1863, 1955, 2040, 2070, 2295, 2312, 2346, 2484, 2601, 2754, 2760, 2890, 3060, 3105, 3128, 3240, 3468, 3519, 3672, 3726, 3910, 4140, 4335, 4590, 4692, 4968, 5202, 5508, 5780, 5865, 6120, 6210, 6647, 6885, 6936, 7038, 7452, 7803, 7820, 8280, 8670, 9180, 9315, 9384, 10404, 10557, 11016, 11560, 11730, 12420, 13005, 13294, 13770, 14076, 14904, 15606, 15640, 17340, 17595, 18360, 18630, 19941, 20808, 21114, 23409, 23460, 24840, 26010, 26588, 27540, 28152, 31212, 31671, 33235, 34680, 35190, 37260, 39015, 39882, 42228, 46818, 46920, 52020, 52785, 53176, 55080, 59823, 62424, 63342, 66470, 70380, 74520, 78030, 79764, 84456, 93636, 99705, 104040, 105570, 117045, 119646, 126684, 132940, 140760, 156060, 158355, 159528, 179469, 187272, 199410, 211140, 234090, 239292, 253368, 265880, 299115, 312120, 316710, 358938, 398820, 422280, 468180, 478584, 538407, 598230, 633420, 717876, 797640, 897345, 936360, 1076814, 1196460, 1266840, 1435752, 1794690, 2153628, 2392920, 2692035, 3589380, 4307256, 5384070, 7178760, 10768140, 21536280]

約数ペア:

[(1, 21536280), (2, 10768140), (3, 7178760), (4, 5384070), (5, 4307256), (6, 3589380), (8, 2692035), (9, 2392920), (10, 2153628), (12, 1794690), (15, 1435752), (17, 1266840), (18, 1196460), (20, 1076814), (23, 936360), (24, 897345), (27, 797640), (30, 717876), (34, 633420), (36, 598230), (40, 538407), (45, 478584), (46, 468180), (51, 422280), (54, 398820), (60, 358938), (68, 316710), (69, 312120), (72, 299115), (81, 265880), (85, 253368), (90, 239292), (92, 234090), (102, 211140), (108, 199410), (115, 187272), (120, 179469), (135, 159528), (136, 158355), (138, 156060), (153, 140760), (162, 132940), (170, 126684), (180, 119646), (184, 117045), (204, 105570), (207, 104040), (216, 99705), (230, 93636), (255, 84456), (270, 79764), (276, 78030), (289, 74520), (306, 70380), (324, 66470), (340, 63342), (345, 62424), (360, 59823), (391, 55080), (405, 53176), (408, 52785), (414, 52020), (459, 46920), (460, 46818), (510, 42228), (540, 39882), (552, 39015), (578, 37260), (612, 35190), (621, 34680), (648, 33235), (680, 31671), (690, 31212), (765, 28152), (782, 27540), (810, 26588), (828, 26010), (867, 24840), (918, 23460), (920, 23409), (1020, 21114), (1035, 20808), (1080, 19941), (1156, 18630), (1173, 18360), (1224, 17595), (1242, 17340), (1377, 15640), (1380, 15606), (1445, 14904), (1530, 14076), (1564, 13770), (1620, 13294), (1656, 13005), (1734, 12420), (1836, 11730), (1863, 11560), (1955, 11016), (2040, 10557), (2070, 10404), (2295, 9384), (2312, 9315), (2346, 9180), (2484, 8670), (2601, 8280), (2754, 7820), (2760, 7803), (2890, 7452), (3060, 7038), (3105, 6936), (3128, 6885), (3240, 6647), (3468, 6210), (3519, 6120), (3672, 5865), (3726, 5780), (3910, 5508), (4140, 5202), (4335, 4968), (4590, 4692)]