21361876

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:208

約数の個数: 36

約数和(自身を含む): 39711168

約数和(自身を除く): 18349292

約数列:

[1, 2, 4, 37, 47, 74, 83, 94, 148, 166, 188, 332, 1369, 1739, 2738, 3071, 3478, 3901, 5476, 6142, 6956, 7802, 12284, 15604, 64343, 113627, 128686, 144337, 227254, 257372, 288674, 454508, 577348, 5340469, 10680938, 21361876]

約数ペア:

[(1, 21361876), (2, 10680938), (4, 5340469), (37, 577348), (47, 454508), (74, 288674), (83, 257372), (94, 227254), (148, 144337), (166, 128686), (188, 113627), (332, 64343), (1369, 15604), (1739, 12284), (2738, 7802), (3071, 6956), (3478, 6142), (3901, 5476)]