261625390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{503}}^1\times {\mathrm{4001}}^1$

素因数の和:4524

約数の個数: 32

約数和(自身を含む): 508286016

約数和(自身を除く): 246660626

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 503, 1006, 2515, 4001, 5030, 6539, 8002, 13078, 20005, 32695, 40010, 52013, 65390, 104026, 260065, 520130, 2012503, 4025006, 10062515, 20125030, 26162539, 52325078, 130812695, 261625390]

約数ペア:

[(1, 261625390), (2, 130812695), (5, 52325078), (10, 26162539), (13, 20125030), (26, 10062515), (65, 4025006), (130, 2012503), (503, 520130), (1006, 260065), (2515, 104026), (4001, 65390), (5030, 52013), (6539, 40010), (8002, 32695), (13078, 20005)]