20915388

素因数分解:

$2^2\times 3^3\times {\mathrm{13}}^1\times {\mathrm{14897}}^1$

素因数の和:14923

約数の個数: 48

約数和(自身を含む): 58400160

約数和(自身を除く): 37484772

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 108, 117, 156, 234, 351, 468, 702, 1404, 14897, 29794, 44691, 59588, 89382, 134073, 178764, 193661, 268146, 387322, 402219, 536292, 580983, 774644, 804438, 1161966, 1608876, 1742949, 2323932, 3485898, 5228847, 6971796, 10457694, 20915388]

約数ペア:

[(1, 20915388), (2, 10457694), (3, 6971796), (4, 5228847), (6, 3485898), (9, 2323932), (12, 1742949), (13, 1608876), (18, 1161966), (26, 804438), (27, 774644), (36, 580983), (39, 536292), (52, 402219), (54, 387322), (78, 268146), (108, 193661), (117, 178764), (156, 134073), (234, 89382), (351, 59588), (468, 44691), (702, 29794), (1404, 14897)]