20183840

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1249}}^1$

素因数の和:1365

約数の個数: 48

約数和(自身を含む): 48195000

約数和(自身を除く): 28011160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1249, 1616, 2020, 2498, 3232, 4040, 4996, 6245, 8080, 9992, 12490, 16160, 19984, 24980, 39968, 49960, 99920, 126149, 199840, 252298, 504596, 630745, 1009192, 1261490, 2018384, 2522980, 4036768, 5045960, 10091920, 20183840]

約数ペア:

[(1, 20183840), (2, 10091920), (4, 5045960), (5, 4036768), (8, 2522980), (10, 2018384), (16, 1261490), (20, 1009192), (32, 630745), (40, 504596), (80, 252298), (101, 199840), (160, 126149), (202, 99920), (404, 49960), (505, 39968), (808, 24980), (1010, 19984), (1249, 16160), (1616, 12490), (2020, 9992), (2498, 8080), (3232, 6245), (4040, 4996)]