21982181

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1987}}^1$

素因数の和:2060

約数の個数: 16

約数和(自身を含む): 25382784

約数和(自身を除く): 3400603

約数列:

[1, 13, 23, 37, 299, 481, 851, 1987, 11063, 25831, 45701, 73519, 594113, 955747, 1690937, 21982181]

約数ペア:

[(1, 21982181), (13, 1690937), (23, 955747), (37, 594113), (299, 73519), (481, 45701), (851, 25831), (1987, 11063)]