20564921

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{631}}^1$

素因数の和:776

約数の個数: 16

約数和(自身を含む): 23358720

約数和(自身を除く): 2793799

約数列:

[1, 13, 23, 109, 299, 631, 1417, 2507, 8203, 14513, 32591, 68779, 188669, 894127, 1581917, 20564921]

約数ペア:

[(1, 20564921), (13, 1581917), (23, 894127), (109, 188669), (299, 68779), (631, 32591), (1417, 14513), (2507, 8203)]