2431220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 5721408

約数和(自身を除く): 3290188

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 257, 430, 473, 514, 860, 946, 1028, 1285, 1892, 2365, 2570, 2827, 4730, 5140, 5654, 9460, 11051, 11308, 14135, 22102, 28270, 44204, 55255, 56540, 110510, 121561, 221020, 243122, 486244, 607805, 1215610, 2431220]

約数ペア:

[(1, 2431220), (2, 1215610), (4, 607805), (5, 486244), (10, 243122), (11, 221020), (20, 121561), (22, 110510), (43, 56540), (44, 55255), (55, 44204), (86, 28270), (110, 22102), (172, 14135), (215, 11308), (220, 11051), (257, 9460), (430, 5654), (473, 5140), (514, 4730), (860, 2827), (946, 2570), (1028, 2365), (1285, 1892)]