20219840

素因数分解:

$2^6\times 5^1\times {\mathrm{179}}^1\times {\mathrm{353}}^1$

素因数の和:549

約数の個数: 56

約数和(自身を含む): 48554640

約数和(自身を除く): 28334800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 179, 320, 353, 358, 706, 716, 895, 1412, 1432, 1765, 1790, 2824, 2864, 3530, 3580, 5648, 5728, 7060, 7160, 11296, 11456, 14120, 14320, 22592, 28240, 28640, 56480, 57280, 63187, 112960, 126374, 252748, 315935, 505496, 631870, 1010992, 1263740, 2021984, 2527480, 4043968, 5054960, 10109920, 20219840]

約数ペア:

[(1, 20219840), (2, 10109920), (4, 5054960), (5, 4043968), (8, 2527480), (10, 2021984), (16, 1263740), (20, 1010992), (32, 631870), (40, 505496), (64, 315935), (80, 252748), (160, 126374), (179, 112960), (320, 63187), (353, 57280), (358, 56480), (706, 28640), (716, 28240), (895, 22592), (1412, 14320), (1432, 14120), (1765, 11456), (1790, 11296), (2824, 7160), (2864, 7060), (3530, 5728), (3580, 5648)]