25453220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{439}}^1$

素因数の和:684

約数の個数: 48

約数和(自身を含む): 57953280

約数和(自身を除く): 32500060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 223, 260, 439, 446, 878, 892, 1115, 1756, 2195, 2230, 2899, 4390, 4460, 5707, 5798, 8780, 11414, 11596, 14495, 22828, 28535, 28990, 57070, 57980, 97897, 114140, 195794, 391588, 489485, 978970, 1272661, 1957940, 2545322, 5090644, 6363305, 12726610, 25453220]

約数ペア:

[(1, 25453220), (2, 12726610), (4, 6363305), (5, 5090644), (10, 2545322), (13, 1957940), (20, 1272661), (26, 978970), (52, 489485), (65, 391588), (130, 195794), (223, 114140), (260, 97897), (439, 57980), (446, 57070), (878, 28990), (892, 28535), (1115, 22828), (1756, 14495), (2195, 11596), (2230, 11414), (2899, 8780), (4390, 5798), (4460, 5707)]