4887640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1721}}^1$

素因数の和:1803

約数の個数: 32

約数和(自身を含む): 11158560

約数和(自身を除く): 6270920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 1721, 2840, 3442, 6884, 8605, 13768, 17210, 34420, 68840, 122191, 244382, 488764, 610955, 977528, 1221910, 2443820, 4887640]

約数ペア:

[(1, 4887640), (2, 2443820), (4, 1221910), (5, 977528), (8, 610955), (10, 488764), (20, 244382), (40, 122191), (71, 68840), (142, 34420), (284, 17210), (355, 13768), (568, 8605), (710, 6884), (1420, 3442), (1721, 2840)]