80731810

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{1987}}^1$

素因数の和:2250

約数の個数: 32

約数和(自身を含む): 154586880

約数和(自身を除く): 73855070

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 239, 478, 1195, 1987, 2390, 3974, 4063, 8126, 9935, 19870, 20315, 33779, 40630, 67558, 168895, 337790, 474893, 949786, 2374465, 4748930, 8073181, 16146362, 40365905, 80731810]

約数ペア:

[(1, 80731810), (2, 40365905), (5, 16146362), (10, 8073181), (17, 4748930), (34, 2374465), (85, 949786), (170, 474893), (239, 337790), (478, 168895), (1195, 67558), (1987, 40630), (2390, 33779), (3974, 20315), (4063, 19870), (8126, 9935)]