21820112

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80221}}^1$

素因数の和:80246

約数の個数: 20

約数和(自身を含む): 44763876

約数和(自身を除く): 22943764

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80221, 160442, 320884, 641768, 1283536, 1363757, 2727514, 5455028, 10910056, 21820112]

約数ペア:

[(1, 21820112), (2, 10910056), (4, 5455028), (8, 2727514), (16, 1363757), (17, 1283536), (34, 641768), (68, 320884), (136, 160442), (272, 80221)]