1788020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^2$

素因数の和:81

約数の個数: 54

約数和(自身を含む): 4250358

約数和(自身を除く): 2462338

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 169, 230, 260, 299, 338, 460, 529, 598, 676, 845, 1058, 1196, 1495, 1690, 2116, 2645, 2990, 3380, 3887, 5290, 5980, 6877, 7774, 10580, 13754, 15548, 19435, 27508, 34385, 38870, 68770, 77740, 89401, 137540, 178802, 357604, 447005, 894010, 1788020]

約数ペア:

[(1, 1788020), (2, 894010), (4, 447005), (5, 357604), (10, 178802), (13, 137540), (20, 89401), (23, 77740), (26, 68770), (46, 38870), (52, 34385), (65, 27508), (92, 19435), (115, 15548), (130, 13754), (169, 10580), (230, 7774), (260, 6877), (299, 5980), (338, 5290), (460, 3887), (529, 3380), (598, 2990), (676, 2645), (845, 2116), (1058, 1690), (1196, 1495)]