21380152

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157207}}^1$

素因数の和:157230

約数の個数: 16

約数和(自身を含む): 42446160

約数和(自身を除く): 21066008

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157207, 314414, 628828, 1257656, 2672519, 5345038, 10690076, 21380152]

約数ペア:

[(1, 21380152), (2, 10690076), (4, 5345038), (8, 2672519), (17, 1257656), (34, 628828), (68, 314414), (136, 157207)]