20372404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{977}}^1$

素因数の和:1395

約数の個数: 24

約数和(自身を含む): 38529288

約数和(自身を除く): 18156884

約数列:

[1, 2, 4, 13, 26, 52, 401, 802, 977, 1604, 1954, 3908, 5213, 10426, 12701, 20852, 25402, 50804, 391777, 783554, 1567108, 5093101, 10186202, 20372404]

約数ペア:

[(1, 20372404), (2, 10186202), (4, 5093101), (13, 1567108), (26, 783554), (52, 391777), (401, 50804), (802, 25402), (977, 20852), (1604, 12701), (1954, 10426), (3908, 5213)]