1720794640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{500231}}^1$

素因数の和:500287

約数の個数: 40

約数和(自身を含む): 4093898688

約数和(自身を除く): 2373104048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 500231, 1000462, 2000924, 2501155, 4001848, 5002310, 8003696, 10004620, 20009240, 21509933, 40018480, 43019866, 86039732, 107549665, 172079464, 215099330, 344158928, 430198660, 860397320, 1720794640]

約数ペア:

[(1, 1720794640), (2, 860397320), (4, 430198660), (5, 344158928), (8, 215099330), (10, 172079464), (16, 107549665), (20, 86039732), (40, 43019866), (43, 40018480), (80, 21509933), (86, 20009240), (172, 10004620), (215, 8003696), (344, 5002310), (430, 4001848), (688, 2501155), (860, 2000924), (1720, 1000462), (3440, 500231)]