21640605

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29443}}^1$

素因数の和:29465

約数の個数: 24

約数和(自身を含む): 40279392

約数和(自身を除く): 18638787

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 29443, 88329, 147215, 206101, 441645, 618303, 1030505, 1442707, 3091515, 4328121, 7213535, 21640605]

約数ペア:

[(1, 21640605), (3, 7213535), (5, 4328121), (7, 3091515), (15, 1442707), (21, 1030505), (35, 618303), (49, 441645), (105, 206101), (147, 147215), (245, 88329), (735, 29443)]