20475988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{3823}}^1$

素因数の和:3943

約数の個数: 24

約数和(自身を含む): 38974208

約数和(自身を除く): 18498220

約数列:

[1, 2, 4, 13, 26, 52, 103, 206, 412, 1339, 2678, 3823, 5356, 7646, 15292, 49699, 99398, 198796, 393769, 787538, 1575076, 5118997, 10237994, 20475988]

約数ペア:

[(1, 20475988), (2, 10237994), (4, 5118997), (13, 1575076), (26, 787538), (52, 393769), (103, 198796), (206, 99398), (412, 49699), (1339, 15292), (2678, 7646), (3823, 5356)]