21434805

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{9721}}^1$

素因数の和:9746

約数の個数: 36

約数和(自身を含む): 43224012

約数和(自身を除く): 21789207

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 9721, 29163, 48605, 68047, 87489, 145815, 204141, 340235, 437445, 476329, 612423, 1020705, 1428987, 2381645, 3062115, 4286961, 7144935, 21434805]

約数ペア:

[(1, 21434805), (3, 7144935), (5, 4286961), (7, 3062115), (9, 2381645), (15, 1428987), (21, 1020705), (35, 612423), (45, 476329), (49, 437445), (63, 340235), (105, 204141), (147, 145815), (245, 87489), (315, 68047), (441, 48605), (735, 29163), (2205, 9721)]