81075720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3613}}^1$

素因数の和:3655

約数の個数: 128

約数和(自身を含む): 281024640

約数和(自身を除く): 199948920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 17, 20, 22, 24, 30, 33, 34, 40, 44, 51, 55, 60, 66, 68, 85, 88, 102, 110, 120, 132, 136, 165, 170, 187, 204, 220, 255, 264, 330, 340, 374, 408, 440, 510, 561, 660, 680, 748, 935, 1020, 1122, 1320, 1496, 1870, 2040, 2244, 2805, 3613, 3740, 4488, 5610, 7226, 7480, 10839, 11220, 14452, 18065, 21678, 22440, 28904, 36130, 39743, 43356, 54195, 61421, 72260, 79486, 86712, 108390, 119229, 122842, 144520, 158972, 184263, 198715, 216780, 238458, 245684, 307105, 317944, 368526, 397430, 433560, 476916, 491368, 596145, 614210, 675631, 737052, 794860, 921315, 953832, 1192290, 1228420, 1351262, 1474104, 1589720, 1842630, 2026893, 2384580, 2456840, 2702524, 3378155, 3685260, 4053786, 4769160, 5405048, 6756310, 7370520, 8107572, 10134465, 13512620, 16215144, 20268930, 27025240, 40537860, 81075720]

約数ペア:

[(1, 81075720), (2, 40537860), (3, 27025240), (4, 20268930), (5, 16215144), (6, 13512620), (8, 10134465), (10, 8107572), (11, 7370520), (12, 6756310), (15, 5405048), (17, 4769160), (20, 4053786), (22, 3685260), (24, 3378155), (30, 2702524), (33, 2456840), (34, 2384580), (40, 2026893), (44, 1842630), (51, 1589720), (55, 1474104), (60, 1351262), (66, 1228420), (68, 1192290), (85, 953832), (88, 921315), (102, 794860), (110, 737052), (120, 675631), (132, 614210), (136, 596145), (165, 491368), (170, 476916), (187, 433560), (204, 397430), (220, 368526), (255, 317944), (264, 307105), (330, 245684), (340, 238458), (374, 216780), (408, 198715), (440, 184263), (510, 158972), (561, 144520), (660, 122842), (680, 119229), (748, 108390), (935, 86712), (1020, 79486), (1122, 72260), (1320, 61421), (1496, 54195), (1870, 43356), (2040, 39743), (2244, 36130), (2805, 28904), (3613, 22440), (3740, 21678), (4488, 18065), (5610, 14452), (7226, 11220), (7480, 10839)]