28909937

素因数分解:

$7^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{397}}^1$

素因数の和:608

約数の個数: 16

約数和(自身を含む): 33775872

約数和(自身を除く): 4865935

約数列:

[1, 7, 101, 103, 397, 707, 721, 2779, 10403, 40097, 40891, 72821, 280679, 286237, 4129991, 28909937]

約数ペア:

[(1, 28909937), (7, 4129991), (101, 286237), (103, 280679), (397, 72821), (707, 40891), (721, 40097), (2779, 10403)]