20071840

素因数分解:

$2^5\times 5^1\times {\mathrm{331}}^1\times {\mathrm{379}}^1$

素因数の和:725

約数の個数: 48

約数和(自身を含む): 47688480

約数和(自身を除く): 27616640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 331, 379, 662, 758, 1324, 1516, 1655, 1895, 2648, 3032, 3310, 3790, 5296, 6064, 6620, 7580, 10592, 12128, 13240, 15160, 26480, 30320, 52960, 60640, 125449, 250898, 501796, 627245, 1003592, 1254490, 2007184, 2508980, 4014368, 5017960, 10035920, 20071840]

約数ペア:

[(1, 20071840), (2, 10035920), (4, 5017960), (5, 4014368), (8, 2508980), (10, 2007184), (16, 1254490), (20, 1003592), (32, 627245), (40, 501796), (80, 250898), (160, 125449), (331, 60640), (379, 52960), (662, 30320), (758, 26480), (1324, 15160), (1516, 13240), (1655, 12128), (1895, 10592), (2648, 7580), (3032, 6620), (3310, 6064), (3790, 5296)]