78717160

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{4957}}^1$

素因数の和:5365

約数の個数: 32

約数和(自身を含む): 177595560

約数和(自身を除く): 98878400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 4957, 7940, 9914, 15880, 19828, 24785, 39656, 49570, 99140, 198280, 1967929, 3935858, 7871716, 9839645, 15743432, 19679290, 39358580, 78717160]

約数ペア:

[(1, 78717160), (2, 39358580), (4, 19679290), (5, 15743432), (8, 9839645), (10, 7871716), (20, 3935858), (40, 1967929), (397, 198280), (794, 99140), (1588, 49570), (1985, 39656), (3176, 24785), (3970, 19828), (4957, 15880), (7940, 9914)]