19782968

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{145463}}^1$

素因数の和:145486

約数の個数: 16

約数和(自身を含む): 39275280

約数和(自身を除く): 19492312

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 145463, 290926, 581852, 1163704, 2472871, 4945742, 9891484, 19782968]

約数ペア:

[(1, 19782968), (2, 9891484), (4, 4945742), (8, 2472871), (17, 1163704), (34, 581852), (68, 290926), (136, 145463)]