25161020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1721}}^1$

素因数の和:1790

約数の個数: 48

約数和(自身を含む): 57280608

約数和(自身を除く): 32119588

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 1462, 1721, 2924, 3442, 3655, 6884, 7310, 8605, 14620, 17210, 29257, 34420, 58514, 74003, 117028, 146285, 148006, 292570, 296012, 370015, 585140, 740030, 1258051, 1480060, 2516102, 5032204, 6290255, 12580510, 25161020]

約数ペア:

[(1, 25161020), (2, 12580510), (4, 6290255), (5, 5032204), (10, 2516102), (17, 1480060), (20, 1258051), (34, 740030), (43, 585140), (68, 370015), (85, 296012), (86, 292570), (170, 148006), (172, 146285), (215, 117028), (340, 74003), (430, 58514), (731, 34420), (860, 29257), (1462, 17210), (1721, 14620), (2924, 8605), (3442, 7310), (3655, 6884)]