21002830

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{28771}}^1$

素因数の和:28851

約数の個数: 16

約数和(自身を含む): 38324304

約数和(自身を除く): 17321474

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 28771, 57542, 143855, 287710, 2100283, 4200566, 10501415, 21002830]

約数ペア:

[(1, 21002830), (2, 10501415), (5, 4200566), (10, 2100283), (73, 287710), (146, 143855), (365, 57542), (730, 28771)]