20845240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40087}}^1$

素因数の和:40111

約数の個数: 32

約数和(自身を含む): 50510880

約数和(自身を除く): 29665640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40087, 80174, 160348, 200435, 320696, 400870, 521131, 801740, 1042262, 1603480, 2084524, 2605655, 4169048, 5211310, 10422620, 20845240]

約数ペア:

[(1, 20845240), (2, 10422620), (4, 5211310), (5, 4169048), (8, 2605655), (10, 2084524), (13, 1603480), (20, 1042262), (26, 801740), (40, 521131), (52, 400870), (65, 320696), (104, 200435), (130, 160348), (260, 80174), (520, 40087)]