8365220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 18361728

約数和(自身を除く): 9996508

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 137, 142, 172, 215, 274, 284, 355, 430, 548, 685, 710, 860, 1370, 1420, 2740, 3053, 5891, 6106, 9727, 11782, 12212, 15265, 19454, 23564, 29455, 30530, 38908, 48635, 58910, 61060, 97270, 117820, 194540, 418261, 836522, 1673044, 2091305, 4182610, 8365220]

約数ペア:

[(1, 8365220), (2, 4182610), (4, 2091305), (5, 1673044), (10, 836522), (20, 418261), (43, 194540), (71, 117820), (86, 97270), (137, 61060), (142, 58910), (172, 48635), (215, 38908), (274, 30530), (284, 29455), (355, 23564), (430, 19454), (548, 15265), (685, 12212), (710, 11782), (860, 9727), (1370, 6106), (1420, 5891), (2740, 3053)]