20171125880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{9677}}^1$

素因数の和:9801

約数の個数: 96

約数和(自身を含む): 48024558720

約数和(自身を除く): 27853432840

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 410, 620, 820, 1240, 1271, 1640, 1681, 2542, 3362, 5084, 6355, 6724, 8405, 9677, 10168, 12710, 13448, 16810, 19354, 25420, 33620, 38708, 48385, 50840, 52111, 67240, 77416, 96770, 104222, 193540, 208444, 260555, 299987, 387080, 396757, 416888, 521110, 599974, 793514, 1042220, 1199948, 1499935, 1587028, 1983785, 2084440, 2399896, 2999870, 3174056, 3967570, 5999740, 7935140, 11999480, 12299467, 15870280, 16267037, 24598934, 32534074, 49197868, 61497335, 65068148, 81335185, 98395736, 122994670, 130136296, 162670370, 245989340, 325340740, 491978680, 504278147, 650681480, 1008556294, 2017112588, 2521390735, 4034225176, 5042781470, 10085562940, 20171125880]

約数ペア:

[(1, 20171125880), (2, 10085562940), (4, 5042781470), (5, 4034225176), (8, 2521390735), (10, 2017112588), (20, 1008556294), (31, 650681480), (40, 504278147), (41, 491978680), (62, 325340740), (82, 245989340), (124, 162670370), (155, 130136296), (164, 122994670), (205, 98395736), (248, 81335185), (310, 65068148), (328, 61497335), (410, 49197868), (620, 32534074), (820, 24598934), (1240, 16267037), (1271, 15870280), (1640, 12299467), (1681, 11999480), (2542, 7935140), (3362, 5999740), (5084, 3967570), (6355, 3174056), (6724, 2999870), (8405, 2399896), (9677, 2084440), (10168, 1983785), (12710, 1587028), (13448, 1499935), (16810, 1199948), (19354, 1042220), (25420, 793514), (33620, 599974), (38708, 521110), (48385, 416888), (50840, 396757), (52111, 387080), (67240, 299987), (77416, 260555), (96770, 208444), (104222, 193540)]