4079920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3923}}^1$

素因数の和:3949

約数の個数: 40

約数和(自身を含む): 10218096

約数和(自身を除く): 6138176

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 3923, 7846, 15692, 19615, 31384, 39230, 50999, 62768, 78460, 101998, 156920, 203996, 254995, 313840, 407992, 509990, 815984, 1019980, 2039960, 4079920]

約数ペア:

[(1, 4079920), (2, 2039960), (4, 1019980), (5, 815984), (8, 509990), (10, 407992), (13, 313840), (16, 254995), (20, 203996), (26, 156920), (40, 101998), (52, 78460), (65, 62768), (80, 50999), (104, 39230), (130, 31384), (208, 19615), (260, 15692), (520, 7846), (1040, 3923)]