21136168

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155413}}^1$

素因数の和:155436

約数の個数: 16

約数和(自身を含む): 41961780

約数和(自身を除く): 20825612

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155413, 310826, 621652, 1243304, 2642021, 5284042, 10568084, 21136168]

約数ペア:

[(1, 21136168), (2, 10568084), (4, 5284042), (8, 2642021), (17, 1243304), (34, 621652), (68, 310826), (136, 155413)]