81620135

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^2\times {\mathrm{107}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 102958128

約数和(自身を除く): 21337993

約数列:

[1, 5, 41, 61, 107, 205, 305, 535, 2501, 3721, 4387, 6527, 12505, 18605, 21935, 32635, 152561, 267607, 398147, 762805, 1338035, 1990735, 16324027, 81620135]

約数ペア:

[(1, 81620135), (5, 16324027), (41, 1990735), (61, 1338035), (107, 762805), (205, 398147), (305, 267607), (535, 152561), (2501, 32635), (3721, 21935), (4387, 18605), (6527, 12505)]