20689916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{2441}}^1$

素因数の和:2621

約数の個数: 24

約数和(自身を含む): 39247824

約数和(自身を除く): 18557908

約数列:

[1, 2, 4, 13, 26, 52, 163, 326, 652, 2119, 2441, 4238, 4882, 8476, 9764, 31733, 63466, 126932, 397883, 795766, 1591532, 5172479, 10344958, 20689916]

約数ペア:

[(1, 20689916), (2, 10344958), (4, 5172479), (13, 1591532), (26, 795766), (52, 397883), (163, 126932), (326, 63466), (652, 31733), (2119, 9764), (2441, 8476), (4238, 4882)]