21603728

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{12619}}^1$

素因数の和:12734

約数の個数: 20

約数和(自身を含む): 42251760

約数和(自身を除く): 20648032

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 12619, 25238, 50476, 100952, 201904, 1350233, 2700466, 5400932, 10801864, 21603728]

約数ペア:

[(1, 21603728), (2, 10801864), (4, 5400932), (8, 2700466), (16, 1350233), (107, 201904), (214, 100952), (428, 50476), (856, 25238), (1712, 12619)]