20551700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15809}}^1$

素因数の和:15836

約数の個数: 36

約数和(自身を含む): 48030780

約数和(自身を除く): 27479080

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 15809, 31618, 63236, 79045, 158090, 205517, 316180, 395225, 411034, 790450, 822068, 1027585, 1580900, 2055170, 4110340, 5137925, 10275850, 20551700]

約数ペア:

[(1, 20551700), (2, 10275850), (4, 5137925), (5, 4110340), (10, 2055170), (13, 1580900), (20, 1027585), (25, 822068), (26, 790450), (50, 411034), (52, 395225), (65, 316180), (100, 205517), (130, 158090), (260, 79045), (325, 63236), (650, 31618), (1300, 15809)]