20921164

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{8059}}^1$

素因数の和:8133

約数の個数: 24

約数和(自身を含む): 40622400

約数和(自身を除く): 19701236

約数列:

[1, 2, 4, 11, 22, 44, 59, 118, 236, 649, 1298, 2596, 8059, 16118, 32236, 88649, 177298, 354596, 475481, 950962, 1901924, 5230291, 10460582, 20921164]

約数ペア:

[(1, 20921164), (2, 10460582), (4, 5230291), (11, 1901924), (22, 950962), (44, 475481), (59, 354596), (118, 177298), (236, 88649), (649, 32236), (1298, 16118), (2596, 8059)]