71687980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{331}}^1$

素因数の和:384

約数の個数: 144

約数和(自身を含む): 200291616

約数和(自身を除く): 128603636

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 49, 52, 65, 68, 70, 85, 91, 98, 119, 130, 140, 170, 182, 196, 221, 238, 245, 260, 331, 340, 364, 442, 455, 476, 490, 595, 637, 662, 833, 884, 910, 980, 1105, 1190, 1274, 1324, 1547, 1655, 1666, 1820, 2210, 2317, 2380, 2548, 3094, 3185, 3310, 3332, 4165, 4303, 4420, 4634, 5627, 6188, 6370, 6620, 7735, 8330, 8606, 9268, 10829, 11254, 11585, 12740, 15470, 16219, 16660, 17212, 21515, 21658, 22508, 23170, 28135, 30121, 30940, 32438, 39389, 43030, 43316, 46340, 54145, 56270, 60242, 64876, 73151, 78778, 81095, 86060, 108290, 112540, 120484, 146302, 150605, 157556, 162190, 196945, 210847, 216580, 275723, 292604, 301210, 324380, 365755, 393890, 421694, 512057, 551446, 602420, 731510, 787780, 843388, 1024114, 1054235, 1102892, 1378615, 1463020, 2048228, 2108470, 2560285, 2757230, 3584399, 4216940, 5120570, 5514460, 7168798, 10241140, 14337596, 17921995, 35843990, 71687980]

約数ペア:

[(1, 71687980), (2, 35843990), (4, 17921995), (5, 14337596), (7, 10241140), (10, 7168798), (13, 5514460), (14, 5120570), (17, 4216940), (20, 3584399), (26, 2757230), (28, 2560285), (34, 2108470), (35, 2048228), (49, 1463020), (52, 1378615), (65, 1102892), (68, 1054235), (70, 1024114), (85, 843388), (91, 787780), (98, 731510), (119, 602420), (130, 551446), (140, 512057), (170, 421694), (182, 393890), (196, 365755), (221, 324380), (238, 301210), (245, 292604), (260, 275723), (331, 216580), (340, 210847), (364, 196945), (442, 162190), (455, 157556), (476, 150605), (490, 146302), (595, 120484), (637, 112540), (662, 108290), (833, 86060), (884, 81095), (910, 78778), (980, 73151), (1105, 64876), (1190, 60242), (1274, 56270), (1324, 54145), (1547, 46340), (1655, 43316), (1666, 43030), (1820, 39389), (2210, 32438), (2317, 30940), (2380, 30121), (2548, 28135), (3094, 23170), (3185, 22508), (3310, 21658), (3332, 21515), (4165, 17212), (4303, 16660), (4420, 16219), (4634, 15470), (5627, 12740), (6188, 11585), (6370, 11254), (6620, 10829), (7735, 9268), (8330, 8606)]