21045490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2879}}^1$

素因数の和:2946

約数の個数: 32

約数和(自身を含む): 41057280

約数和(自身を除く): 20011790

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 170, 215, 430, 731, 1462, 2879, 3655, 5758, 7310, 14395, 28790, 48943, 97886, 123797, 244715, 247594, 489430, 618985, 1237970, 2104549, 4209098, 10522745, 21045490]

約数ペア:

[(1, 21045490), (2, 10522745), (5, 4209098), (10, 2104549), (17, 1237970), (34, 618985), (43, 489430), (85, 247594), (86, 244715), (170, 123797), (215, 97886), (430, 48943), (731, 28790), (1462, 14395), (2879, 7310), (3655, 5758)]