21108020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{45887}}^1$

素因数の和:45919

約数の個数: 24

約数和(自身を含む): 46255104

約数和(自身を除く): 25147084

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 45887, 91774, 183548, 229435, 458870, 917740, 1055401, 2110802, 4221604, 5277005, 10554010, 21108020]

約数ペア:

[(1, 21108020), (2, 10554010), (4, 5277005), (5, 4221604), (10, 2110802), (20, 1055401), (23, 917740), (46, 458870), (92, 229435), (115, 183548), (230, 91774), (460, 45887)]