78540920

素因数分解:

$2^3\times 5^1\times {\mathrm{739}}^1\times {\mathrm{2657}}^1$

素因数の和:3407

約数の個数: 32

約数和(自身を含む): 177022800

約数和(自身を除く): 98481880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 739, 1478, 2657, 2956, 3695, 5314, 5912, 7390, 10628, 13285, 14780, 21256, 26570, 29560, 53140, 106280, 1963523, 3927046, 7854092, 9817615, 15708184, 19635230, 39270460, 78540920]

約数ペア:

[(1, 78540920), (2, 39270460), (4, 19635230), (5, 15708184), (8, 9817615), (10, 7854092), (20, 3927046), (40, 1963523), (739, 106280), (1478, 53140), (2657, 29560), (2956, 26570), (3695, 21256), (5314, 14780), (5912, 13285), (7390, 10628)]