20540480

素因数分解:

$2^6\times 5^1\times {\mathrm{64189}}^1$

素因数の和:64206

約数の個数: 28

約数和(自身を含む): 48912780

約数和(自身を除く): 28372300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64189, 128378, 256756, 320945, 513512, 641890, 1027024, 1283780, 2054048, 2567560, 4108096, 5135120, 10270240, 20540480]

約数ペア:

[(1, 20540480), (2, 10270240), (4, 5135120), (5, 4108096), (8, 2567560), (10, 2054048), (16, 1283780), (20, 1027024), (32, 641890), (40, 513512), (64, 320945), (80, 256756), (160, 128378), (320, 64189)]