20990811

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{3631}}^1$

素因数の和:3722

約数の個数: 16

約数和(自身を含む): 29288448

約数和(自身を除く): 8297637

約数列:

[1, 3, 41, 47, 123, 141, 1927, 3631, 5781, 10893, 148871, 170657, 446613, 511971, 6996937, 20990811]

約数ペア:

[(1, 20990811), (3, 6996937), (41, 511971), (47, 446613), (123, 170657), (141, 148871), (1927, 10893), (3631, 5781)]