80288440

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{3181}}^1$

素因数の和:3823

約数の個数: 32

約数和(自身を含む): 180992160

約数和(自身を除く): 100703720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 1262, 2524, 3155, 3181, 5048, 6310, 6362, 12620, 12724, 15905, 25240, 25448, 31810, 63620, 127240, 2007211, 4014422, 8028844, 10036055, 16057688, 20072110, 40144220, 80288440]

約数ペア:

[(1, 80288440), (2, 40144220), (4, 20072110), (5, 16057688), (8, 10036055), (10, 8028844), (20, 4014422), (40, 2007211), (631, 127240), (1262, 63620), (2524, 31810), (3155, 25448), (3181, 25240), (5048, 15905), (6310, 12724), (6362, 12620)]