20724620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{827}}^1$

素因数の和:1022

約数の個数: 48

約数和(自身を含む): 50077440

約数和(自身を除く): 29352820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 179, 358, 716, 827, 895, 1253, 1654, 1790, 2506, 3308, 3580, 4135, 5012, 5789, 6265, 8270, 11578, 12530, 16540, 23156, 25060, 28945, 57890, 115780, 148033, 296066, 592132, 740165, 1036231, 1480330, 2072462, 2960660, 4144924, 5181155, 10362310, 20724620]

約数ペア:

[(1, 20724620), (2, 10362310), (4, 5181155), (5, 4144924), (7, 2960660), (10, 2072462), (14, 1480330), (20, 1036231), (28, 740165), (35, 592132), (70, 296066), (140, 148033), (179, 115780), (358, 57890), (716, 28945), (827, 25060), (895, 23156), (1253, 16540), (1654, 12530), (1790, 11578), (2506, 8270), (3308, 6265), (3580, 5789), (4135, 5012)]