20421495

素因数分解:

$3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5099}}^1$

素因数の和:5199

約数の個数: 24

約数和(自身を含む): 35802000

約数和(自身を除く): 15380505

約数列:

[1, 3, 5, 9, 15, 45, 89, 267, 445, 801, 1335, 4005, 5099, 15297, 25495, 45891, 76485, 229455, 453811, 1361433, 2269055, 4084299, 6807165, 20421495]

約数ペア:

[(1, 20421495), (3, 6807165), (5, 4084299), (9, 2269055), (15, 1361433), (45, 453811), (89, 229455), (267, 76485), (445, 45891), (801, 25495), (1335, 15297), (4005, 5099)]