21017830

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51263}}^1$

素因数の和:51311

約数の個数: 16

約数和(自身を含む): 38755584

約数和(自身を除く): 17737754

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51263, 102526, 256315, 512630, 2101783, 4203566, 10508915, 21017830]

約数ペア:

[(1, 21017830), (2, 10508915), (5, 4203566), (10, 2101783), (41, 512630), (82, 256315), (205, 102526), (410, 51263)]