19885090

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{25171}}^1$

素因数の和:25257

約数の個数: 16

約数和(自身を含む): 36247680

約数和(自身を除く): 16362590

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 25171, 50342, 125855, 251710, 1988509, 3977018, 9942545, 19885090]

約数ペア:

[(1, 19885090), (2, 9942545), (5, 3977018), (10, 1988509), (79, 251710), (158, 125855), (395, 50342), (790, 25171)]