19771900

素因数分解:

$2^2\times 5^2\times {\mathrm{163}}^1\times {\mathrm{1213}}^1$

素因数の和:1390

約数の個数: 36

約数和(自身を含む): 43203832

約数和(自身を除く): 23431932

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 163, 326, 652, 815, 1213, 1630, 2426, 3260, 4075, 4852, 6065, 8150, 12130, 16300, 24260, 30325, 60650, 121300, 197719, 395438, 790876, 988595, 1977190, 3954380, 4942975, 9885950, 19771900]

約数ペア:

[(1, 19771900), (2, 9885950), (4, 4942975), (5, 3954380), (10, 1977190), (20, 988595), (25, 790876), (50, 395438), (100, 197719), (163, 121300), (326, 60650), (652, 30325), (815, 24260), (1213, 16300), (1630, 12130), (2426, 8150), (3260, 6065), (4075, 4852)]