20108465

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{449}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 26681400

約数和(自身を除く): 6572935

約数列:

[1, 5, 13, 53, 65, 169, 265, 449, 689, 845, 2245, 3445, 5837, 8957, 23797, 29185, 44785, 75881, 118985, 309361, 379405, 1546805, 4021693, 20108465]

約数ペア:

[(1, 20108465), (5, 4021693), (13, 1546805), (53, 379405), (65, 309361), (169, 118985), (265, 75881), (449, 44785), (689, 29185), (845, 23797), (2245, 8957), (3445, 5837)]