21821985

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15643}}^1$

素因数の和:15685

約数の個数: 24

約数和(自身を含む): 39047424

約数和(自身を除く): 17225439

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 15643, 46929, 78215, 140787, 234645, 484933, 703935, 1454799, 2424665, 4364397, 7273995, 21821985]

約数ペア:

[(1, 21821985), (3, 7273995), (5, 4364397), (9, 2424665), (15, 1454799), (31, 703935), (45, 484933), (93, 234645), (155, 140787), (279, 78215), (465, 46929), (1395, 15643)]