21469815

素因数分解:

$3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7121}}^1$

素因数の和:7199

約数の個数: 24

約数和(自身を含む): 37775088

約数和(自身を除く): 16305273

約数列:

[1, 3, 5, 9, 15, 45, 67, 201, 335, 603, 1005, 3015, 7121, 21363, 35605, 64089, 106815, 320445, 477107, 1431321, 2385535, 4293963, 7156605, 21469815]

約数ペア:

[(1, 21469815), (3, 7156605), (5, 4293963), (9, 2385535), (15, 1431321), (45, 477107), (67, 320445), (201, 106815), (335, 64089), (603, 35605), (1005, 21363), (3015, 7121)]