21228225

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{14897}}^1$

素因数の和:14929

約数の個数: 24

約数和(自身を含む): 36947040

約数和(自身を除く): 15718815

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 14897, 44691, 74485, 223455, 283043, 372425, 849129, 1117275, 1415215, 4245645, 7076075, 21228225]

約数ペア:

[(1, 21228225), (3, 7076075), (5, 4245645), (15, 1415215), (19, 1117275), (25, 849129), (57, 372425), (75, 283043), (95, 223455), (285, 74485), (475, 44691), (1425, 14897)]