20658872

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{733}}^1$

素因数の和:1023

約数の個数: 32

約数和(自身を含む): 41926080

約数和(自身を除く): 21267208

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 271, 542, 733, 1084, 1466, 2168, 2932, 3523, 5864, 7046, 9529, 14092, 19058, 28184, 38116, 76232, 198643, 397286, 794572, 1589144, 2582359, 5164718, 10329436, 20658872]

約数ペア:

[(1, 20658872), (2, 10329436), (4, 5164718), (8, 2582359), (13, 1589144), (26, 794572), (52, 397286), (104, 198643), (271, 76232), (542, 38116), (733, 28184), (1084, 19058), (1466, 14092), (2168, 9529), (2932, 7046), (3523, 5864)]