128228710

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{6781}}^1$

素因数の和:6880

約数の個数: 32

約数和(自身を含む): 242198784

約数和(自身を除く): 113970074

約数列:

[1, 2, 5, 10, 31, 61, 62, 122, 155, 305, 310, 610, 1891, 3782, 6781, 9455, 13562, 18910, 33905, 67810, 210211, 413641, 420422, 827282, 1051055, 2068205, 2102110, 4136410, 12822871, 25645742, 64114355, 128228710]

約数ペア:

[(1, 128228710), (2, 64114355), (5, 25645742), (10, 12822871), (31, 4136410), (61, 2102110), (62, 2068205), (122, 1051055), (155, 827282), (305, 420422), (310, 413641), (610, 210211), (1891, 67810), (3782, 33905), (6781, 18910), (9455, 13562)]