20490964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{1013}}^1$

素因数の和:1419

約数の個数: 24

約数和(自身を含む): 38755080

約数和(自身を除く): 18264116

約数列:

[1, 2, 4, 13, 26, 52, 389, 778, 1013, 1556, 2026, 4052, 5057, 10114, 13169, 20228, 26338, 52676, 394057, 788114, 1576228, 5122741, 10245482, 20490964]

約数ペア:

[(1, 20490964), (2, 10245482), (4, 5122741), (13, 1576228), (26, 788114), (52, 394057), (389, 52676), (778, 26338), (1013, 20228), (1556, 13169), (2026, 10114), (4052, 5057)]