78986680

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{8623}}^1$

素因数の和:8863

約数の個数: 32

約数和(自身を含む): 178516800

約数和(自身を除く): 99530120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2290, 4580, 8623, 9160, 17246, 34492, 43115, 68984, 86230, 172460, 344920, 1974667, 3949334, 7898668, 9873335, 15797336, 19746670, 39493340, 78986680]

約数ペア:

[(1, 78986680), (2, 39493340), (4, 19746670), (5, 15797336), (8, 9873335), (10, 7898668), (20, 3949334), (40, 1974667), (229, 344920), (458, 172460), (916, 86230), (1145, 68984), (1832, 43115), (2290, 34492), (4580, 17246), (8623, 9160)]