858506680

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{351847}}^1$

素因数の和:351919

約数の個数: 32

約数和(自身を含む): 1963311840

約数和(自身を除く): 1104805160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 351847, 703694, 1407388, 1759235, 2814776, 3518470, 7036940, 14073880, 21462667, 42925334, 85850668, 107313335, 171701336, 214626670, 429253340, 858506680]

約数ペア:

[(1, 858506680), (2, 429253340), (4, 214626670), (5, 171701336), (8, 107313335), (10, 85850668), (20, 42925334), (40, 21462667), (61, 14073880), (122, 7036940), (244, 3518470), (305, 2814776), (488, 1759235), (610, 1407388), (1220, 703694), (2440, 351847)]