21340168

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{156913}}^1$

素因数の和:156936

約数の個数: 16

約数和(自身を含む): 42366780

約数和(自身を除く): 21026612

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 156913, 313826, 627652, 1255304, 2667521, 5335042, 10670084, 21340168]

約数ペア:

[(1, 21340168), (2, 10670084), (4, 5335042), (8, 2667521), (17, 1255304), (34, 627652), (68, 313826), (136, 156913)]