21228903

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1559}}^1$

素因数の和:1671

約数の個数: 24

約数和(自身を含む): 32853600

約数和(自身を除く): 11624697

約数列:

[1, 3, 9, 17, 51, 89, 153, 267, 801, 1513, 1559, 4539, 4677, 13617, 14031, 26503, 79509, 138751, 238527, 416253, 1248759, 2358767, 7076301, 21228903]

約数ペア:

[(1, 21228903), (3, 7076301), (9, 2358767), (17, 1248759), (51, 416253), (89, 238527), (153, 138751), (267, 79509), (801, 26503), (1513, 14031), (1559, 13617), (4539, 4677)]