128378817

素因数分解:

$3^3\times 7^1\times {\mathrm{691}}^1\times {\mathrm{983}}^1$

素因数の和:1690

約数の個数: 32

約数和(自身を含む): 217896960

約数和(自身を除く): 89518143

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 691, 983, 2073, 2949, 4837, 6219, 6881, 8847, 14511, 18657, 20643, 26541, 43533, 61929, 130599, 185787, 679253, 2037759, 4754771, 6113277, 14264313, 18339831, 42792939, 128378817]

約数ペア:

[(1, 128378817), (3, 42792939), (7, 18339831), (9, 14264313), (21, 6113277), (27, 4754771), (63, 2037759), (189, 679253), (691, 185787), (983, 130599), (2073, 61929), (2949, 43533), (4837, 26541), (6219, 20643), (6881, 18657), (8847, 14511)]