21423927

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8573}}^1$

素因数の和:8607

約数の個数: 24

約数和(自身を含む): 35187696

約数和(自身を除く): 13763769

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8573, 25719, 60011, 145741, 180033, 420077, 437223, 1020187, 1260231, 3060561, 7141309, 21423927]

約数ペア:

[(1, 21423927), (3, 7141309), (7, 3060561), (17, 1260231), (21, 1020187), (49, 437223), (51, 420077), (119, 180033), (147, 145741), (357, 60011), (833, 25719), (2499, 8573)]