65322640

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1663}}^1$

素因数の和:2167

約数の個数: 40

約数和(自身を含む): 152275968

約数和(自身を除く): 86953328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1663, 1964, 2455, 3326, 3928, 4910, 6652, 7856, 8315, 9820, 13304, 16630, 19640, 26608, 33260, 39280, 66520, 133040, 816533, 1633066, 3266132, 4082665, 6532264, 8165330, 13064528, 16330660, 32661320, 65322640]

約数ペア:

[(1, 65322640), (2, 32661320), (4, 16330660), (5, 13064528), (8, 8165330), (10, 6532264), (16, 4082665), (20, 3266132), (40, 1633066), (80, 816533), (491, 133040), (982, 66520), (1663, 39280), (1964, 33260), (2455, 26608), (3326, 19640), (3928, 16630), (4910, 13304), (6652, 9820), (7856, 8315)]