21087830

素因数分解:

$2^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{6869}}^1$

素因数の和:7183

約数の個数: 16

約数和(自身を含む): 38087280

約数和(自身を除く): 16999450

約数列:

[1, 2, 5, 10, 307, 614, 1535, 3070, 6869, 13738, 34345, 68690, 2108783, 4217566, 10543915, 21087830]

約数ペア:

[(1, 21087830), (2, 10543915), (5, 4217566), (10, 2108783), (307, 68690), (614, 34345), (1535, 13738), (3070, 6869)]