21308170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163909}}^1$

素因数の和:163929

約数の個数: 16

約数和(自身を含む): 41305320

約数和(自身を除く): 19997150

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163909, 327818, 819545, 1639090, 2130817, 4261634, 10654085, 21308170]

約数ペア:

[(1, 21308170), (2, 10654085), (5, 4261634), (10, 2130817), (13, 1639090), (26, 819545), (65, 327818), (130, 163909)]