20912668

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{12659}}^1$

素因数の和:12729

約数の個数: 24

約数和(自身を含む): 42537600

約数和(自身を除く): 21624932

約数列:

[1, 2, 4, 7, 14, 28, 59, 118, 236, 413, 826, 1652, 12659, 25318, 50636, 88613, 177226, 354452, 746881, 1493762, 2987524, 5228167, 10456334, 20912668]

約数ペア:

[(1, 20912668), (2, 10456334), (4, 5228167), (7, 2987524), (14, 1493762), (28, 746881), (59, 354452), (118, 177226), (236, 88613), (413, 50636), (826, 25318), (1652, 12659)]