128801560

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{21611}}^1$

素因数の和:21771

約数の個数: 32

約数和(自身を含む): 291762000

約数和(自身を除く): 162960440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 5960, 21611, 43222, 86444, 108055, 172888, 216110, 432220, 864440, 3220039, 6440078, 12880156, 16100195, 25760312, 32200390, 64400780, 128801560]

約数ペア:

[(1, 128801560), (2, 64400780), (4, 32200390), (5, 25760312), (8, 16100195), (10, 12880156), (20, 6440078), (40, 3220039), (149, 864440), (298, 432220), (596, 216110), (745, 172888), (1192, 108055), (1490, 86444), (2980, 43222), (5960, 21611)]