19379620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3923}}^1$

素因数の和:3964

約数の個数: 48

約数和(自身を含む): 46146240

約数和(自身を除く): 26766620

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 3923, 4940, 7846, 15692, 19615, 39230, 50999, 74537, 78460, 101998, 149074, 203996, 254995, 298148, 372685, 509990, 745370, 968981, 1019980, 1490740, 1937962, 3875924, 4844905, 9689810, 19379620]

約数ペア:

[(1, 19379620), (2, 9689810), (4, 4844905), (5, 3875924), (10, 1937962), (13, 1490740), (19, 1019980), (20, 968981), (26, 745370), (38, 509990), (52, 372685), (65, 298148), (76, 254995), (95, 203996), (130, 149074), (190, 101998), (247, 78460), (260, 74537), (380, 50999), (494, 39230), (988, 19615), (1235, 15692), (2470, 7846), (3923, 4940)]