20717390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{121867}}^1$

素因数の和:121891

約数の個数: 16

約数和(自身を含む): 39485232

約数和(自身を除く): 18767842

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 121867, 243734, 609335, 1218670, 2071739, 4143478, 10358695, 20717390]

約数ペア:

[(1, 20717390), (2, 10358695), (5, 4143478), (10, 2071739), (17, 1218670), (34, 609335), (85, 243734), (170, 121867)]