256564370

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1\times {\mathrm{1811}}^1$

素因数の和:2306

約数の個数: 32

約数和(自身を含む): 478020096

約数和(自身を除く): 221455726

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 457, 914, 1811, 2285, 3622, 4570, 9055, 14167, 18110, 28334, 56141, 70835, 112282, 141670, 280705, 561410, 827627, 1655254, 4138135, 8276270, 25656437, 51312874, 128282185, 256564370]

約数ペア:

[(1, 256564370), (2, 128282185), (5, 51312874), (10, 25656437), (31, 8276270), (62, 4138135), (155, 1655254), (310, 827627), (457, 561410), (914, 280705), (1811, 141670), (2285, 112282), (3622, 70835), (4570, 56141), (9055, 28334), (14167, 18110)]