20537105

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 27433728

約数和(自身を除く): 6896623

約数列:

[1, 5, 17, 41, 71, 83, 85, 205, 355, 415, 697, 1207, 1411, 2911, 3403, 3485, 5893, 6035, 7055, 14555, 17015, 29465, 49487, 57851, 100181, 241613, 247435, 289255, 500905, 1208065, 4107421, 20537105]

約数ペア:

[(1, 20537105), (5, 4107421), (17, 1208065), (41, 500905), (71, 289255), (83, 247435), (85, 241613), (205, 100181), (355, 57851), (415, 49487), (697, 29465), (1207, 17015), (1411, 14555), (2911, 7055), (3403, 6035), (3485, 5893)]