256609905

素因数分解:

$3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1\times {\mathrm{647}}^1$

素因数の和:985

約数の個数: 32

約数和(自身を含む): 416358144

約数和(自身を除く): 159748239

約数列:

[1, 3, 5, 15, 137, 193, 411, 579, 647, 685, 965, 1941, 2055, 2895, 3235, 9705, 26441, 79323, 88639, 124871, 132205, 265917, 374613, 396615, 443195, 624355, 1329585, 1873065, 17107327, 51321981, 85536635, 256609905]

約数ペア:

[(1, 256609905), (3, 85536635), (5, 51321981), (15, 17107327), (137, 1873065), (193, 1329585), (411, 624355), (579, 443195), (647, 396615), (685, 374613), (965, 265917), (1941, 132205), (2055, 124871), (2895, 88639), (3235, 79323), (9705, 26441)]