251163510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{644009}}^1$

素因数の和:644032

約数の個数: 32

約数和(自身を含む): 649162080

約数和(自身を除く): 397998570

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 644009, 1288018, 1932027, 3220045, 3864054, 6440090, 8372117, 9660135, 16744234, 19320270, 25116351, 41860585, 50232702, 83721170, 125581755, 251163510]

約数ペア:

[(1, 251163510), (2, 125581755), (3, 83721170), (5, 50232702), (6, 41860585), (10, 25116351), (13, 19320270), (15, 16744234), (26, 9660135), (30, 8372117), (39, 6440090), (65, 3864054), (78, 3220045), (130, 1932027), (195, 1288018), (390, 644009)]