31217560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{70949}}^1$

素因数の和:70971

約数の個数: 32

約数和(自身を含む): 76626000

約数和(自身を除く): 45408440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 70949, 141898, 283796, 354745, 567592, 709490, 780439, 1418980, 1560878, 2837960, 3121756, 3902195, 6243512, 7804390, 15608780, 31217560]

約数ペア:

[(1, 31217560), (2, 15608780), (4, 7804390), (5, 6243512), (8, 3902195), (10, 3121756), (11, 2837960), (20, 1560878), (22, 1418980), (40, 780439), (44, 709490), (55, 567592), (88, 354745), (110, 283796), (220, 141898), (440, 70949)]