20247890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{11981}}^1$

素因数の和:12014

約数の個数: 24

約数和(自身を含む): 39468708

約数和(自身を除く): 19220818

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 11981, 23962, 59905, 119810, 155753, 311506, 778765, 1557530, 2024789, 4049578, 10123945, 20247890]

約数ペア:

[(1, 20247890), (2, 10123945), (5, 4049578), (10, 2024789), (13, 1557530), (26, 778765), (65, 311506), (130, 155753), (169, 119810), (338, 59905), (845, 23962), (1690, 11981)]