20065720

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1613}}^1$

素因数の和:1935

約数の個数: 32

約数和(自身を含む): 45321120

約数和(自身を除く): 25255400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 1613, 2488, 3110, 3226, 6220, 6452, 8065, 12440, 12904, 16130, 32260, 64520, 501643, 1003286, 2006572, 2508215, 4013144, 5016430, 10032860, 20065720]

約数ペア:

[(1, 20065720), (2, 10032860), (4, 5016430), (5, 4013144), (8, 2508215), (10, 2006572), (20, 1003286), (40, 501643), (311, 64520), (622, 32260), (1244, 16130), (1555, 12904), (1613, 12440), (2488, 8065), (3110, 6452), (3226, 6220)]