21509485

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{359}}^1\times {\mathrm{521}}^1$

素因数の和:908

約数の個数: 16

約数和(自身を含む): 27060480

約数和(自身を除く): 5550995

約数列:

[1, 5, 23, 115, 359, 521, 1795, 2605, 8257, 11983, 41285, 59915, 187039, 935195, 4301897, 21509485]

約数ペア:

[(1, 21509485), (5, 4301897), (23, 935195), (115, 187039), (359, 59915), (521, 41285), (1795, 11983), (2605, 8257)]