81125420

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{16831}}^1$

素因数の和:17081

約数の個数: 24

約数和(自身を含む): 171080448

約数和(自身を除く): 89955028

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4820, 16831, 33662, 67324, 84155, 168310, 336620, 4056271, 8112542, 16225084, 20281355, 40562710, 81125420]

約数ペア:

[(1, 81125420), (2, 40562710), (4, 20281355), (5, 16225084), (10, 8112542), (20, 4056271), (241, 336620), (482, 168310), (964, 84155), (1205, 67324), (2410, 33662), (4820, 16831)]