77929880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{278321}}^1$

素因数の和:278339

約数の個数: 32

約数和(自身を含む): 200391840

約数和(自身を除く): 122461960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 278321, 556642, 1113284, 1391605, 1948247, 2226568, 2783210, 3896494, 5566420, 7792988, 9741235, 11132840, 15585976, 19482470, 38964940, 77929880]

約数ペア:

[(1, 77929880), (2, 38964940), (4, 19482470), (5, 15585976), (7, 11132840), (8, 9741235), (10, 7792988), (14, 5566420), (20, 3896494), (28, 2783210), (35, 2226568), (40, 1948247), (56, 1391605), (70, 1113284), (140, 556642), (280, 278321)]