8531740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{409}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 20664000

約数和(自身を除く): 12132260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 409, 596, 745, 818, 1043, 1490, 1636, 2045, 2086, 2863, 2980, 4090, 4172, 5215, 5726, 8180, 10430, 11452, 14315, 20860, 28630, 57260, 60941, 121882, 243764, 304705, 426587, 609410, 853174, 1218820, 1706348, 2132935, 4265870, 8531740]

約数ペア:

[(1, 8531740), (2, 4265870), (4, 2132935), (5, 1706348), (7, 1218820), (10, 853174), (14, 609410), (20, 426587), (28, 304705), (35, 243764), (70, 121882), (140, 60941), (149, 57260), (298, 28630), (409, 20860), (596, 14315), (745, 11452), (818, 10430), (1043, 8180), (1490, 5726), (1636, 5215), (2045, 4172), (2086, 4090), (2863, 2980)]