2100980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 5174400

約数和(自身を除く): 3073420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 349, 430, 602, 698, 860, 1204, 1396, 1505, 1745, 2443, 3010, 3490, 4886, 6020, 6980, 9772, 12215, 15007, 24430, 30014, 48860, 60028, 75035, 105049, 150070, 210098, 300140, 420196, 525245, 1050490, 2100980]

約数ペア:

[(1, 2100980), (2, 1050490), (4, 525245), (5, 420196), (7, 300140), (10, 210098), (14, 150070), (20, 105049), (28, 75035), (35, 60028), (43, 48860), (70, 30014), (86, 24430), (140, 15007), (172, 12215), (215, 9772), (301, 6980), (349, 6020), (430, 4886), (602, 3490), (698, 3010), (860, 2443), (1204, 1745), (1396, 1505)]