4891420

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1229}}^1$

素因数の和:1437

約数の個数: 24

約数和(自身を含む): 10332000

約数和(自身を除く): 5440580

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1229, 1990, 2458, 3980, 4916, 6145, 12290, 24580, 244571, 489142, 978284, 1222855, 2445710, 4891420]

約数ペア:

[(1, 4891420), (2, 2445710), (4, 1222855), (5, 978284), (10, 489142), (20, 244571), (199, 24580), (398, 12290), (796, 6145), (995, 4916), (1229, 3980), (1990, 2458)]