2781740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{823}}^1$

素因数の和:858

約数の個数: 36

約数和(自身を含む): 6333264

約数和(自身を除く): 3551524

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 823, 845, 1646, 1690, 3292, 3380, 4115, 8230, 10699, 16460, 21398, 42796, 53495, 106990, 139087, 213980, 278174, 556348, 695435, 1390870, 2781740]

約数ペア:

[(1, 2781740), (2, 1390870), (4, 695435), (5, 556348), (10, 278174), (13, 213980), (20, 139087), (26, 106990), (52, 53495), (65, 42796), (130, 21398), (169, 16460), (260, 10699), (338, 8230), (676, 4115), (823, 3380), (845, 3292), (1646, 1690)]