20298005

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6373}}^1$

素因数の和:6405

約数の個数: 24

約数和(自身を含む): 30518712

約数和(自身を除く): 10220707

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 6373, 31865, 44611, 82849, 223055, 312277, 414245, 579943, 1561385, 2899715, 4059601, 20298005]

約数ペア:

[(1, 20298005), (5, 4059601), (7, 2899715), (13, 1561385), (35, 579943), (49, 414245), (65, 312277), (91, 223055), (245, 82849), (455, 44611), (637, 31865), (3185, 6373)]