21704785

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1\times {\mathrm{443}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 26853120

約数和(自身を除く): 5148335

約数列:

[1, 5, 41, 205, 239, 443, 1195, 2215, 9799, 18163, 48995, 90815, 105877, 529385, 4340957, 21704785]

約数ペア:

[(1, 21704785), (5, 4340957), (41, 529385), (205, 105877), (239, 90815), (443, 48995), (1195, 18163), (2215, 9799)]