21459710

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73999}}^1$

素因数の和:74035

約数の個数: 16

約数和(自身を含む): 39960000

約数和(自身を除く): 18500290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 73999, 147998, 369995, 739990, 2145971, 4291942, 10729855, 21459710]

約数ペア:

[(1, 21459710), (2, 10729855), (5, 4291942), (10, 2145971), (29, 739990), (58, 369995), (145, 147998), (290, 73999)]