77961980

素因数分解:

$2^2\times 5^1\times {\mathrm{1741}}^1\times {\mathrm{2239}}^1$

素因数の和:3989

約数の個数: 24

約数和(自身を含む): 163887360

約数和(自身を除く): 85925380

約数列:

[1, 2, 4, 5, 10, 20, 1741, 2239, 3482, 4478, 6964, 8705, 8956, 11195, 17410, 22390, 34820, 44780, 3898099, 7796198, 15592396, 19490495, 38980990, 77961980]

約数ペア:

[(1, 77961980), (2, 38980990), (4, 19490495), (5, 15592396), (10, 7796198), (20, 3898099), (1741, 44780), (2239, 34820), (3482, 22390), (4478, 17410), (6964, 11195), (8705, 8956)]