12399920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11923}}^1$

素因数の和:11949

約数の個数: 40

約数和(自身を含む): 31050096

約数和(自身を除く): 18650176

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 11923, 23846, 47692, 59615, 95384, 119230, 154999, 190768, 238460, 309998, 476920, 619996, 774995, 953840, 1239992, 1549990, 2479984, 3099980, 6199960, 12399920]

約数ペア:

[(1, 12399920), (2, 6199960), (4, 3099980), (5, 2479984), (8, 1549990), (10, 1239992), (13, 953840), (16, 774995), (20, 619996), (26, 476920), (40, 309998), (52, 238460), (65, 190768), (80, 154999), (104, 119230), (130, 95384), (208, 59615), (260, 47692), (520, 23846), (1040, 11923)]