21669165

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{68791}}^1$

素因数の和:68809

約数の個数: 24

約数和(自身を含む): 42926208

約数和(自身を除く): 21257043

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 68791, 206373, 343955, 481537, 619119, 1031865, 1444611, 2407685, 3095595, 4333833, 7223055, 21669165]

約数ペア:

[(1, 21669165), (3, 7223055), (5, 4333833), (7, 3095595), (9, 2407685), (15, 1444611), (21, 1031865), (35, 619119), (45, 481537), (63, 343955), (105, 206373), (315, 68791)]