18043376

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{389}}^1$

素因数の和:633

約数の個数: 40

約数和(自身を含む): 37914240

約数和(自身を除く): 19870864

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 223, 389, 446, 778, 892, 1556, 1784, 2899, 3112, 3568, 5057, 5798, 6224, 10114, 11596, 20228, 23192, 40456, 46384, 80912, 86747, 173494, 346988, 693976, 1127711, 1387952, 2255422, 4510844, 9021688, 18043376]

約数ペア:

[(1, 18043376), (2, 9021688), (4, 4510844), (8, 2255422), (13, 1387952), (16, 1127711), (26, 693976), (52, 346988), (104, 173494), (208, 86747), (223, 80912), (389, 46384), (446, 40456), (778, 23192), (892, 20228), (1556, 11596), (1784, 10114), (2899, 6224), (3112, 5798), (3568, 5057)]