201456905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1039}}^1$

素因数の和:1233

約数の個数: 32

約数和(自身を含む): 276057600

約数和(自身を除く): 74600695

約数列:

[1, 5, 13, 19, 65, 95, 157, 247, 785, 1039, 1235, 2041, 2983, 5195, 10205, 13507, 14915, 19741, 38779, 67535, 98705, 163123, 193895, 256633, 815615, 1283165, 2120599, 3099337, 10602995, 15496685, 40291381, 201456905]

約数ペア:

[(1, 201456905), (5, 40291381), (13, 15496685), (19, 10602995), (65, 3099337), (95, 2120599), (157, 1283165), (247, 815615), (785, 256633), (1039, 193895), (1235, 163123), (2041, 98705), (2983, 67535), (5195, 38779), (10205, 19741), (13507, 14915)]