21281925

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{5791}}^1$

素因数の和:5818

約数の個数: 36

約数和(自身を含む): 40937856

約数和(自身を除く): 19655931

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 525, 735, 1225, 3675, 5791, 17373, 28955, 40537, 86865, 121611, 144775, 202685, 283759, 434325, 608055, 851277, 1013425, 1418795, 3040275, 4256385, 7093975, 21281925]

約数ペア:

[(1, 21281925), (3, 7093975), (5, 4256385), (7, 3040275), (15, 1418795), (21, 1013425), (25, 851277), (35, 608055), (49, 434325), (75, 283759), (105, 202685), (147, 144775), (175, 121611), (245, 86865), (525, 40537), (735, 28955), (1225, 17373), (3675, 5791)]