20517510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{52609}}^1$

素因数の和:52632

約数の個数: 32

約数和(自身を含む): 53030880

約数和(自身を除く): 32513370

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 52609, 105218, 157827, 263045, 315654, 526090, 683917, 789135, 1367834, 1578270, 2051751, 3419585, 4103502, 6839170, 10258755, 20517510]

約数ペア:

[(1, 20517510), (2, 10258755), (3, 6839170), (5, 4103502), (6, 3419585), (10, 2051751), (13, 1578270), (15, 1367834), (26, 789135), (30, 683917), (39, 526090), (65, 315654), (78, 263045), (130, 157827), (195, 105218), (390, 52609)]