25780220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{967}}^1$

素因数の和:1050

約数の個数: 48

約数和(自身を含む): 57243648

約数和(自身を除く): 31463428

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 124, 155, 172, 215, 310, 430, 620, 860, 967, 1333, 1934, 2666, 3868, 4835, 5332, 6665, 9670, 13330, 19340, 26660, 29977, 41581, 59954, 83162, 119908, 149885, 166324, 207905, 299770, 415810, 599540, 831620, 1289011, 2578022, 5156044, 6445055, 12890110, 25780220]

約数ペア:

[(1, 25780220), (2, 12890110), (4, 6445055), (5, 5156044), (10, 2578022), (20, 1289011), (31, 831620), (43, 599540), (62, 415810), (86, 299770), (124, 207905), (155, 166324), (172, 149885), (215, 119908), (310, 83162), (430, 59954), (620, 41581), (860, 29977), (967, 26660), (1333, 19340), (1934, 13330), (2666, 9670), (3868, 6665), (4835, 5332)]