21920968

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{563}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 42773760

約数和(自身を除く): 20852792

約数列:

[1, 2, 4, 8, 31, 62, 124, 157, 248, 314, 563, 628, 1126, 1256, 2252, 4504, 4867, 9734, 17453, 19468, 34906, 38936, 69812, 88391, 139624, 176782, 353564, 707128, 2740121, 5480242, 10960484, 21920968]

約数ペア:

[(1, 21920968), (2, 10960484), (4, 5480242), (8, 2740121), (31, 707128), (62, 353564), (124, 176782), (157, 139624), (248, 88391), (314, 69812), (563, 38936), (628, 34906), (1126, 19468), (1256, 17453), (2252, 9734), (4504, 4867)]