248784510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{637909}}^1$

素因数の和:637932

約数の個数: 32

約数和(自身を含む): 643013280

約数和(自身を除く): 394228770

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 637909, 1275818, 1913727, 3189545, 3827454, 6379090, 8292817, 9568635, 16585634, 19137270, 24878451, 41464085, 49756902, 82928170, 124392255, 248784510]

約数ペア:

[(1, 248784510), (2, 124392255), (3, 82928170), (5, 49756902), (6, 41464085), (10, 24878451), (13, 19137270), (15, 16585634), (26, 9568635), (30, 8292817), (39, 6379090), (65, 3827454), (78, 3189545), (130, 1913727), (195, 1275818), (390, 637909)]