491320

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 1127520

約数和(自身を除く): 636200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 173, 284, 346, 355, 568, 692, 710, 865, 1384, 1420, 1730, 2840, 3460, 6920, 12283, 24566, 49132, 61415, 98264, 122830, 245660, 491320]

約数ペア:

[(1, 491320), (2, 245660), (4, 122830), (5, 98264), (8, 61415), (10, 49132), (20, 24566), (40, 12283), (71, 6920), (142, 3460), (173, 2840), (284, 1730), (346, 1420), (355, 1384), (568, 865), (692, 710)]