21979372

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{1129}}^1$

素因数の和:1321

約数の個数: 24

約数和(自身を含む): 39992960

約数和(自身を除く): 18013588

約数列:

[1, 2, 4, 31, 62, 124, 157, 314, 628, 1129, 2258, 4516, 4867, 9734, 19468, 34999, 69998, 139996, 177253, 354506, 709012, 5494843, 10989686, 21979372]

約数ペア:

[(1, 21979372), (2, 10989686), (4, 5494843), (31, 709012), (62, 354506), (124, 177253), (157, 139996), (314, 69998), (628, 34999), (1129, 19468), (2258, 9734), (4516, 4867)]