21889040

素因数分解:

$2^4\times 5^1\times {\mathrm{273613}}^1$

素因数の和:273626

約数の個数: 20

約数和(自身を含む): 50892204

約数和(自身を除く): 29003164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273613, 547226, 1094452, 1368065, 2188904, 2736130, 4377808, 5472260, 10944520, 21889040]

約数ペア:

[(1, 21889040), (2, 10944520), (4, 5472260), (5, 4377808), (8, 2736130), (10, 2188904), (16, 1368065), (20, 1094452), (40, 547226), (80, 273613)]