21589396

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{4001}}^1$

素因数の和:4095

約数の個数: 24

約数和(自身を含む): 40340160

約数和(自身を除く): 18750764

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 284, 1349, 2698, 4001, 5396, 8002, 16004, 76019, 152038, 284071, 304076, 568142, 1136284, 5397349, 10794698, 21589396]

約数ペア:

[(1, 21589396), (2, 10794698), (4, 5397349), (19, 1136284), (38, 568142), (71, 304076), (76, 284071), (142, 152038), (284, 76019), (1349, 16004), (2698, 8002), (4001, 5396)]