42478540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{821}}^1$

素因数の和:1042

約数の個数: 48

約数和(自身を含む): 96667200

約数和(自身を除く): 54188660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 199, 260, 398, 796, 821, 995, 1642, 1990, 2587, 3284, 3980, 4105, 5174, 8210, 10348, 10673, 12935, 16420, 21346, 25870, 42692, 51740, 53365, 106730, 163379, 213460, 326758, 653516, 816895, 1633790, 2123927, 3267580, 4247854, 8495708, 10619635, 21239270, 42478540]

約数ペア:

[(1, 42478540), (2, 21239270), (4, 10619635), (5, 8495708), (10, 4247854), (13, 3267580), (20, 2123927), (26, 1633790), (52, 816895), (65, 653516), (130, 326758), (199, 213460), (260, 163379), (398, 106730), (796, 53365), (821, 51740), (995, 42692), (1642, 25870), (1990, 21346), (2587, 16420), (3284, 12935), (3980, 10673), (4105, 10348), (5174, 8210)]