81359980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{24071}}^1$

素因数の和:24106

約数の個数: 36

約数和(自身を含む): 185017392

約数和(自身を除く): 103657412

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 24071, 48142, 96284, 120355, 240710, 312923, 481420, 625846, 1251692, 1564615, 3129230, 4067999, 6258460, 8135998, 16271996, 20339995, 40679990, 81359980]

約数ペア:

[(1, 81359980), (2, 40679990), (4, 20339995), (5, 16271996), (10, 8135998), (13, 6258460), (20, 4067999), (26, 3129230), (52, 1564615), (65, 1251692), (130, 625846), (169, 481420), (260, 312923), (338, 240710), (676, 120355), (845, 96284), (1690, 48142), (3380, 24071)]