20011965

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21871}}^1$

素因数の和:21940

約数の個数: 16

約数和(自身を含む): 32545536

約数和(自身を除く): 12533571

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 21871, 65613, 109355, 328065, 1334131, 4002393, 6670655, 20011965]

約数ペア:

[(1, 20011965), (3, 6670655), (5, 4002393), (15, 1334131), (61, 328065), (183, 109355), (305, 65613), (915, 21871)]