21056800

素因数分解:

$2^5\times 5^2\times {\mathrm{26321}}^1$

素因数の和:26341

約数の個数: 36

約数和(自身を含む): 51406866

約数和(自身を除く): 30350066

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 26321, 52642, 105284, 131605, 210568, 263210, 421136, 526420, 658025, 842272, 1052840, 1316050, 2105680, 2632100, 4211360, 5264200, 10528400, 21056800]

約数ペア:

[(1, 21056800), (2, 10528400), (4, 5264200), (5, 4211360), (8, 2632100), (10, 2105680), (16, 1316050), (20, 1052840), (25, 842272), (32, 658025), (40, 526420), (50, 421136), (80, 263210), (100, 210568), (160, 131605), (200, 105284), (400, 52642), (800, 26321)]