128982640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{84857}}^1$

素因数の和:84889

約数の個数: 40

約数和(自身を含む): 315671760

約数和(自身を除く): 186689120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 84857, 169714, 339428, 424285, 678856, 848570, 1357712, 1612283, 1697140, 3224566, 3394280, 6449132, 6788560, 8061415, 12898264, 16122830, 25796528, 32245660, 64491320, 128982640]

約数ペア:

[(1, 128982640), (2, 64491320), (4, 32245660), (5, 25796528), (8, 16122830), (10, 12898264), (16, 8061415), (19, 6788560), (20, 6449132), (38, 3394280), (40, 3224566), (76, 1697140), (80, 1612283), (95, 1357712), (152, 848570), (190, 678856), (304, 424285), (380, 339428), (760, 169714), (1520, 84857)]