21396170

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{10861}}^1$

素因数の和:11065

約数の個数: 16

約数和(自身を含む): 38712168

約数和(自身を除く): 17315998

約数列:

[1, 2, 5, 10, 197, 394, 985, 1970, 10861, 21722, 54305, 108610, 2139617, 4279234, 10698085, 21396170]

約数ペア:

[(1, 21396170), (2, 10698085), (5, 4279234), (10, 2139617), (197, 108610), (394, 54305), (985, 21722), (1970, 10861)]