31178940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{563}}^1$

素因数の和:659

約数の個数: 96

約数和(自身を含む): 95510016

約数和(自身を除く): 64331076

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 71, 78, 130, 142, 156, 195, 213, 260, 284, 355, 390, 426, 563, 710, 780, 852, 923, 1065, 1126, 1420, 1689, 1846, 2130, 2252, 2769, 2815, 3378, 3692, 4260, 4615, 5538, 5630, 6756, 7319, 8445, 9230, 11076, 11260, 13845, 14638, 16890, 18460, 21957, 27690, 29276, 33780, 36595, 39973, 43914, 55380, 73190, 79946, 87828, 109785, 119919, 146380, 159892, 199865, 219570, 239838, 399730, 439140, 479676, 519649, 599595, 799460, 1039298, 1199190, 1558947, 2078596, 2398380, 2598245, 3117894, 5196490, 6235788, 7794735, 10392980, 15589470, 31178940]

約数ペア:

[(1, 31178940), (2, 15589470), (3, 10392980), (4, 7794735), (5, 6235788), (6, 5196490), (10, 3117894), (12, 2598245), (13, 2398380), (15, 2078596), (20, 1558947), (26, 1199190), (30, 1039298), (39, 799460), (52, 599595), (60, 519649), (65, 479676), (71, 439140), (78, 399730), (130, 239838), (142, 219570), (156, 199865), (195, 159892), (213, 146380), (260, 119919), (284, 109785), (355, 87828), (390, 79946), (426, 73190), (563, 55380), (710, 43914), (780, 39973), (852, 36595), (923, 33780), (1065, 29276), (1126, 27690), (1420, 21957), (1689, 18460), (1846, 16890), (2130, 14638), (2252, 13845), (2769, 11260), (2815, 11076), (3378, 9230), (3692, 8445), (4260, 7319), (4615, 6756), (5538, 5630)]