21311870

素因数分解:

$2^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 39287808

約数和(自身を除く): 17975938

約数列:

[1, 2, 5, 10, 97, 127, 173, 194, 254, 346, 485, 635, 865, 970, 1270, 1730, 12319, 16781, 21971, 24638, 33562, 43942, 61595, 83905, 109855, 123190, 167810, 219710, 2131187, 4262374, 10655935, 21311870]

約数ペア:

[(1, 21311870), (2, 10655935), (5, 4262374), (10, 2131187), (97, 219710), (127, 167810), (173, 123190), (194, 109855), (254, 83905), (346, 61595), (485, 43942), (635, 33562), (865, 24638), (970, 21971), (1270, 16781), (1730, 12319)]