31577960

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11119}}^1$

素因数の和:11201

約数の個数: 32

約数和(自身を含む): 72057600

約数和(自身を除く): 40479640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 11119, 22238, 44476, 55595, 88952, 111190, 222380, 444760, 789449, 1578898, 3157796, 3947245, 6315592, 7894490, 15788980, 31577960]

約数ペア:

[(1, 31577960), (2, 15788980), (4, 7894490), (5, 6315592), (8, 3947245), (10, 3157796), (20, 1578898), (40, 789449), (71, 444760), (142, 222380), (284, 111190), (355, 88952), (568, 55595), (710, 44476), (1420, 22238), (2840, 11119)]