251222010

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{644159}}^1$

素因数の和:644182

約数の個数: 32

約数和(自身を含む): 649313280

約数和(自身を除く): 398091270

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 644159, 1288318, 1932477, 3220795, 3864954, 6441590, 8374067, 9662385, 16748134, 19324770, 25122201, 41870335, 50244402, 83740670, 125611005, 251222010]

約数ペア:

[(1, 251222010), (2, 125611005), (3, 83740670), (5, 50244402), (6, 41870335), (10, 25122201), (13, 19324770), (15, 16748134), (26, 9662385), (30, 8374067), (39, 6441590), (65, 3864954), (78, 3220795), (130, 1932477), (195, 1288318), (390, 644159)]