20520465

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27919}}^1$

素因数の和:27941

約数の個数: 24

約数和(自身を含む): 38194560

約数和(自身を除く): 17674095

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27919, 83757, 139595, 195433, 418785, 586299, 977165, 1368031, 2931495, 4104093, 6840155, 20520465]

約数ペア:

[(1, 20520465), (3, 6840155), (5, 4104093), (7, 2931495), (15, 1368031), (21, 977165), (35, 586299), (49, 418785), (105, 195433), (147, 139595), (245, 83757), (735, 27919)]