21425265

素因数分解:

$3^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2851}}^1$

素因数の和:3029

約数の個数: 24

約数和(自身を含む): 37372608

約数和(自身を除く): 15947343

約数列:

[1, 3, 5, 9, 15, 45, 167, 501, 835, 1503, 2505, 2851, 7515, 8553, 14255, 25659, 42765, 128295, 476117, 1428351, 2380585, 4285053, 7141755, 21425265]

約数ペア:

[(1, 21425265), (3, 7141755), (5, 4285053), (9, 2380585), (15, 1428351), (45, 476117), (167, 128295), (501, 42765), (835, 25659), (1503, 14255), (2505, 8553), (2851, 7515)]