19385015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 27107136

約数和(自身を除く): 7722121

約数列:

[1, 5, 13, 17, 53, 65, 85, 221, 265, 331, 689, 901, 1105, 1655, 3445, 4303, 4505, 5627, 11713, 17543, 21515, 28135, 58565, 73151, 87715, 228059, 298231, 365755, 1140295, 1491155, 3877003, 19385015]

約数ペア:

[(1, 19385015), (5, 3877003), (13, 1491155), (17, 1140295), (53, 365755), (65, 298231), (85, 228059), (221, 87715), (265, 73151), (331, 58565), (689, 28135), (901, 21515), (1105, 17543), (1655, 11713), (3445, 5627), (4303, 4505)]