648207088

素因数分解:

$2^4\times {\mathrm{1987}}^1\times {\mathrm{20389}}^1$

素因数の和:22384

約数の個数: 20

約数和(自身を含む): 1256594920

約数和(自身を除く): 608387832

約数列:

[1, 2, 4, 8, 16, 1987, 3974, 7948, 15896, 20389, 31792, 40778, 81556, 163112, 326224, 40512943, 81025886, 162051772, 324103544, 648207088]

約数ペア:

[(1, 648207088), (2, 324103544), (4, 162051772), (8, 81025886), (16, 40512943), (1987, 326224), (3974, 163112), (7948, 81556), (15896, 40778), (20389, 31792)]