21340725

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{5807}}^1$

素因数の和:5834

約数の個数: 36

約数和(自身を含む): 41050944

約数和(自身を除く): 19710219

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 525, 735, 1225, 3675, 5807, 17421, 29035, 40649, 87105, 121947, 145175, 203245, 284543, 435525, 609735, 853629, 1016225, 1422715, 3048675, 4268145, 7113575, 21340725]

約数ペア:

[(1, 21340725), (3, 7113575), (5, 4268145), (7, 3048675), (15, 1422715), (21, 1016225), (25, 853629), (35, 609735), (49, 435525), (75, 284543), (105, 203245), (147, 145175), (175, 121947), (245, 87105), (525, 40649), (735, 29035), (1225, 17421), (3675, 5807)]