25257897

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{21101}}^1$

素因数の和:21133

約数の個数: 24

約数和(自身を含む): 43892160

約数和(自身を除く): 18634263

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 21101, 63303, 147707, 189909, 400919, 443121, 1202757, 1329363, 2806433, 3608271, 8419299, 25257897]

約数ペア:

[(1, 25257897), (3, 8419299), (7, 3608271), (9, 2806433), (19, 1329363), (21, 1202757), (57, 443121), (63, 400919), (133, 189909), (171, 147707), (399, 63303), (1197, 21101)]