20408210

素因数分解:

$2^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{8539}}^1$

素因数の和:8785

約数の個数: 16

約数和(自身を含む): 36892800

約数和(自身を除く): 16484590

約数列:

[1, 2, 5, 10, 239, 478, 1195, 2390, 8539, 17078, 42695, 85390, 2040821, 4081642, 10204105, 20408210]

約数ペア:

[(1, 20408210), (2, 10204105), (5, 4081642), (10, 2040821), (239, 85390), (478, 42695), (1195, 17078), (2390, 8539)]