20424404

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5101}}^1$

素因数の和:5136

約数の個数: 48

約数和(自身を含む): 47999616

約数和(自身を除く): 27575212

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5101, 10202, 20404, 35707, 56111, 66313, 71414, 112222, 132626, 142828, 224444, 265252, 392777, 464191, 729443, 785554, 928382, 1458886, 1571108, 1856764, 2917772, 5106101, 10212202, 20424404]

約数ペア:

[(1, 20424404), (2, 10212202), (4, 5106101), (7, 2917772), (11, 1856764), (13, 1571108), (14, 1458886), (22, 928382), (26, 785554), (28, 729443), (44, 464191), (52, 392777), (77, 265252), (91, 224444), (143, 142828), (154, 132626), (182, 112222), (286, 71414), (308, 66313), (364, 56111), (572, 35707), (1001, 20404), (2002, 10202), (4004, 5101)]