77680

素因数分解:

$2^4\times 5^1\times {\mathrm{971}}^1$

素因数の和:984

約数の個数: 20

約数和(自身を含む): 180792

約数和(自身を除く): 103112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 971, 1942, 3884, 4855, 7768, 9710, 15536, 19420, 38840, 77680]

約数ペア:

[(1, 77680), (2, 38840), (4, 19420), (5, 15536), (8, 9710), (10, 7768), (16, 4855), (20, 3884), (40, 1942), (80, 971)]