128205992

素因数分解:

$2^3\times {\mathrm{127}}^1\times {\mathrm{257}}^1\times {\mathrm{491}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 243717120

約数和(自身を除く): 115511128

約数列:

[1, 2, 4, 8, 127, 254, 257, 491, 508, 514, 982, 1016, 1028, 1964, 2056, 3928, 32639, 62357, 65278, 124714, 126187, 130556, 249428, 252374, 261112, 498856, 504748, 1009496, 16025749, 32051498, 64102996, 128205992]

約数ペア:

[(1, 128205992), (2, 64102996), (4, 32051498), (8, 16025749), (127, 1009496), (254, 504748), (257, 498856), (491, 261112), (508, 252374), (514, 249428), (982, 130556), (1016, 126187), (1028, 124714), (1964, 65278), (2056, 62357), (3928, 32639)]