20163966417

素因数分解:

$3^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{500881}}^1$

素因数の和:500971

約数の個数: 40

約数和(自身を含む): 34909471872

約数和(自身を除く): 14745505455

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 189, 213, 497, 567, 639, 1491, 1917, 4473, 5751, 13419, 40257, 500881, 1502643, 3506167, 4507929, 10518501, 13523787, 31555503, 35562551, 40571361, 94666509, 106687653, 248937857, 283999527, 320062959, 746813571, 960188877, 2240440713, 2880566631, 6721322139, 20163966417]

約数ペア:

[(1, 20163966417), (3, 6721322139), (7, 2880566631), (9, 2240440713), (21, 960188877), (27, 746813571), (63, 320062959), (71, 283999527), (81, 248937857), (189, 106687653), (213, 94666509), (497, 40571361), (567, 35562551), (639, 31555503), (1491, 13523787), (1917, 10518501), (4473, 4507929), (5751, 3506167), (13419, 1502643), (40257, 500881)]