21266640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29537}}^1$

素因数の和:29556

約数の個数: 60

約数和(自身を含む): 71422884

約数和(自身を除く): 50156244

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29537, 59074, 88611, 118148, 147685, 177222, 236296, 265833, 295370, 354444, 443055, 472592, 531666, 590740, 708888, 886110, 1063332, 1181480, 1329165, 1417776, 1772220, 2126664, 2362960, 2658330, 3544440, 4253328, 5316660, 7088880, 10633320, 21266640]

約数ペア:

[(1, 21266640), (2, 10633320), (3, 7088880), (4, 5316660), (5, 4253328), (6, 3544440), (8, 2658330), (9, 2362960), (10, 2126664), (12, 1772220), (15, 1417776), (16, 1329165), (18, 1181480), (20, 1063332), (24, 886110), (30, 708888), (36, 590740), (40, 531666), (45, 472592), (48, 443055), (60, 354444), (72, 295370), (80, 265833), (90, 236296), (120, 177222), (144, 147685), (180, 118148), (240, 88611), (360, 59074), (720, 29537)]