2108720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:669

約数の個数: 40

約数和(自身を含む): 5024976

約数和(自身を除く): 2916256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 613, 688, 860, 1226, 1720, 2452, 3065, 3440, 4904, 6130, 9808, 12260, 24520, 26359, 49040, 52718, 105436, 131795, 210872, 263590, 421744, 527180, 1054360, 2108720]

約数ペア:

[(1, 2108720), (2, 1054360), (4, 527180), (5, 421744), (8, 263590), (10, 210872), (16, 131795), (20, 105436), (40, 52718), (43, 49040), (80, 26359), (86, 24520), (172, 12260), (215, 9808), (344, 6130), (430, 4904), (613, 3440), (688, 3065), (860, 2452), (1226, 1720)]