21501740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82699}}^1$

素因数の和:82721

約数の個数: 24

約数和(自身を含む): 48627600

約数和(自身を除く): 27125860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82699, 165398, 330796, 413495, 826990, 1075087, 1653980, 2150174, 4300348, 5375435, 10750870, 21501740]

約数ペア:

[(1, 21501740), (2, 10750870), (4, 5375435), (5, 4300348), (10, 2150174), (13, 1653980), (20, 1075087), (26, 826990), (52, 413495), (65, 330796), (130, 165398), (260, 82699)]