257922015

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{42667}}^1$

素因数の和:42719

約数の個数: 32

約数和(自身を含む): 458766336

約数和(自身を除く): 200844321

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 195, 403, 465, 1209, 2015, 6045, 42667, 128001, 213335, 554671, 640005, 1322677, 1664013, 2773355, 3968031, 6613385, 8320065, 17194801, 19840155, 51584403, 85974005, 257922015]

約数ペア:

[(1, 257922015), (3, 85974005), (5, 51584403), (13, 19840155), (15, 17194801), (31, 8320065), (39, 6613385), (65, 3968031), (93, 2773355), (155, 1664013), (195, 1322677), (403, 640005), (465, 554671), (1209, 213335), (2015, 128001), (6045, 42667)]