18902845

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{173}}^1$

素因数の和:273

約数の個数: 24

約数和(自身を含む): 25183368

約数和(自身を除く): 6280523

約数列:

[1, 5, 13, 41, 65, 173, 205, 533, 865, 1681, 2249, 2665, 7093, 8405, 11245, 21853, 35465, 92209, 109265, 290813, 461045, 1454065, 3780569, 18902845]

約数ペア:

[(1, 18902845), (5, 3780569), (13, 1454065), (41, 461045), (65, 290813), (173, 109265), (205, 92209), (533, 35465), (865, 21853), (1681, 11245), (2249, 8405), (2665, 7093)]