20977557

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{4021}}^1$

素因数の和:4108

約数の個数: 16

約数和(自身を含む): 29344512

約数和(自身を除く): 8366955

約数列:

[1, 3, 37, 47, 111, 141, 1739, 4021, 5217, 12063, 148777, 188987, 446331, 566961, 6992519, 20977557]

約数ペア:

[(1, 20977557), (3, 6992519), (37, 566961), (47, 446331), (111, 188987), (141, 148777), (1739, 12063), (4021, 5217)]