21190425

素因数分解:

$3^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{4217}}^1$

素因数の和:4297

約数の個数: 24

約数和(自身を含む): 35566176

約数和(自身を除く): 14375751

約数列:

[1, 3, 5, 15, 25, 67, 75, 201, 335, 1005, 1675, 4217, 5025, 12651, 21085, 63255, 105425, 282539, 316275, 847617, 1412695, 4238085, 7063475, 21190425]

約数ペア:

[(1, 21190425), (3, 7063475), (5, 4238085), (15, 1412695), (25, 847617), (67, 316275), (75, 282539), (201, 105425), (335, 63255), (1005, 21085), (1675, 12651), (4217, 5025)]