257942380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{299933}}^1$

素因数の和:299985

約数の個数: 24

約数和(自身を含む): 554278032

約数和(自身を除く): 296335652

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 299933, 599866, 1199732, 1499665, 2999330, 5998660, 12897119, 25794238, 51588476, 64485595, 128971190, 257942380]

約数ペア:

[(1, 257942380), (2, 128971190), (4, 64485595), (5, 51588476), (10, 25794238), (20, 12897119), (43, 5998660), (86, 2999330), (172, 1499665), (215, 1199732), (430, 599866), (860, 299933)]