256218500

素因数分解:

$2^2\times 5^3\times {\mathrm{419}}^1\times {\mathrm{1223}}^1$

素因数の和:1661

約数の個数: 48

約数和(自身を含む): 561375360

約数和(自身を除く): 305156860

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 419, 500, 838, 1223, 1676, 2095, 2446, 4190, 4892, 6115, 8380, 10475, 12230, 20950, 24460, 30575, 41900, 52375, 61150, 104750, 122300, 152875, 209500, 305750, 512437, 611500, 1024874, 2049748, 2562185, 5124370, 10248740, 12810925, 25621850, 51243700, 64054625, 128109250, 256218500]

約数ペア:

[(1, 256218500), (2, 128109250), (4, 64054625), (5, 51243700), (10, 25621850), (20, 12810925), (25, 10248740), (50, 5124370), (100, 2562185), (125, 2049748), (250, 1024874), (419, 611500), (500, 512437), (838, 305750), (1223, 209500), (1676, 152875), (2095, 122300), (2446, 104750), (4190, 61150), (4892, 52375), (6115, 41900), (8380, 30575), (10475, 24460), (12230, 20950)]