21249590

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{173}}^2$

素因数の和:424

約数の個数: 24

約数和(自身を含む): 39013488

約数和(自身を除く): 17763898

約数列:

[1, 2, 5, 10, 71, 142, 173, 346, 355, 710, 865, 1730, 12283, 24566, 29929, 59858, 61415, 122830, 149645, 299290, 2124959, 4249918, 10624795, 21249590]

約数ペア:

[(1, 21249590), (2, 10624795), (5, 4249918), (10, 2124959), (71, 299290), (142, 149645), (173, 122830), (346, 61415), (355, 59858), (710, 29929), (865, 24566), (1730, 12283)]