257056960

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25913}}^1$

素因数の和:25961

約数の個数: 56

約数和(自身を含む): 631886976

約数和(自身を除く): 374830016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 25913, 51826, 103652, 129565, 207304, 259130, 414608, 518260, 803303, 829216, 1036520, 1606606, 1658432, 2073040, 3213212, 4016515, 4146080, 6426424, 8033030, 8292160, 12852848, 16066060, 25705696, 32132120, 51411392, 64264240, 128528480, 257056960]

約数ペア:

[(1, 257056960), (2, 128528480), (4, 64264240), (5, 51411392), (8, 32132120), (10, 25705696), (16, 16066060), (20, 12852848), (31, 8292160), (32, 8033030), (40, 6426424), (62, 4146080), (64, 4016515), (80, 3213212), (124, 2073040), (155, 1658432), (160, 1606606), (248, 1036520), (310, 829216), (320, 803303), (496, 518260), (620, 414608), (992, 259130), (1240, 207304), (1984, 129565), (2480, 103652), (4960, 51826), (9920, 25913)]