21322020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{7561}}^1$

素因数の和:7620

約数の個数: 48

約数和(自身を含む): 60979968

約数和(自身を除く): 39657948

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 94, 141, 188, 235, 282, 470, 564, 705, 940, 1410, 2820, 7561, 15122, 22683, 30244, 37805, 45366, 75610, 90732, 113415, 151220, 226830, 355367, 453660, 710734, 1066101, 1421468, 1776835, 2132202, 3553670, 4264404, 5330505, 7107340, 10661010, 21322020]

約数ペア:

[(1, 21322020), (2, 10661010), (3, 7107340), (4, 5330505), (5, 4264404), (6, 3553670), (10, 2132202), (12, 1776835), (15, 1421468), (20, 1066101), (30, 710734), (47, 453660), (60, 355367), (94, 226830), (141, 151220), (188, 113415), (235, 90732), (282, 75610), (470, 45366), (564, 37805), (705, 30244), (940, 22683), (1410, 15122), (2820, 7561)]