85455220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137831}}^1$

素因数の和:137871

約数の個数: 24

約数和(自身を含む): 185246208

約数和(自身を除く): 99790988

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 137831, 275662, 551324, 689155, 1378310, 2756620, 4272761, 8545522, 17091044, 21363805, 42727610, 85455220]

約数ペア:

[(1, 85455220), (2, 42727610), (4, 21363805), (5, 17091044), (10, 8545522), (20, 4272761), (31, 2756620), (62, 1378310), (124, 689155), (155, 551324), (310, 275662), (620, 137831)]