21531769

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1669}}^1$

素因数の和:1792

約数の個数: 16

約数和(自身を含む): 26185600

約数和(自身を除く): 4653831

約数列:

[1, 7, 19, 97, 133, 679, 1669, 1843, 11683, 12901, 31711, 161893, 221977, 1133251, 3075967, 21531769]

約数ペア:

[(1, 21531769), (7, 3075967), (19, 1133251), (97, 221977), (133, 161893), (679, 31711), (1669, 12901), (1843, 11683)]