80144920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64633}}^1$

素因数の和:64675

約数の個数: 32

約数和(自身を含む): 186145920

約数和(自身を除く): 106001000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 64633, 129266, 258532, 323165, 517064, 646330, 1292660, 2003623, 2585320, 4007246, 8014492, 10018115, 16028984, 20036230, 40072460, 80144920]

約数ペア:

[(1, 80144920), (2, 40072460), (4, 20036230), (5, 16028984), (8, 10018115), (10, 8014492), (20, 4007246), (31, 2585320), (40, 2003623), (62, 1292660), (124, 646330), (155, 517064), (248, 323165), (310, 258532), (620, 129266), (1240, 64633)]