261489310

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{428671}}^1$

素因数の和:428739

約数の個数: 16

約数和(自身を含む): 478397952

約数和(自身を除く): 216908642

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 428671, 857342, 2143355, 4286710, 26148931, 52297862, 130744655, 261489310]

約数ペア:

[(1, 261489310), (2, 130744655), (5, 52297862), (10, 26148931), (61, 4286710), (122, 2143355), (305, 857342), (610, 428671)]