21018021291

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{13193987}}^1$

素因数の和:13194055

約数の個数: 16

約数和(自身を含む): 31665571200

約数和(自身を除く): 10647549909

約数列:

[1, 3, 9, 27, 59, 177, 531, 1593, 13193987, 39581961, 118745883, 356237649, 778445233, 2335335699, 7006007097, 21018021291]

約数ペア:

[(1, 21018021291), (3, 7006007097), (9, 2335335699), (27, 778445233), (59, 356237649), (177, 118745883), (531, 39581961), (1593, 13193987)]