81660820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131711}}^1$

素因数の和:131751

約数の個数: 24

約数和(自身を含む): 177020928

約数和(自身を除く): 95360108

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 131711, 263422, 526844, 658555, 1317110, 2634220, 4083041, 8166082, 16332164, 20415205, 40830410, 81660820]

約数ペア:

[(1, 81660820), (2, 40830410), (4, 20415205), (5, 16332164), (10, 8166082), (20, 4083041), (31, 2634220), (62, 1317110), (124, 658555), (155, 526844), (310, 263422), (620, 131711)]