21443335

素因数分解:

$5^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:530

約数の個数: 16

約数和(自身を含む): 26244000

約数和(自身を除く): 4800665

約数列:

[1, 5, 107, 149, 269, 535, 745, 1345, 15943, 28783, 40081, 79715, 143915, 200405, 4288667, 21443335]

約数ペア:

[(1, 21443335), (5, 4288667), (107, 200405), (149, 143915), (269, 79715), (535, 40081), (745, 28783), (1345, 15943)]