20031208

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{37}}^2\times {\mathrm{59}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 40521600

約数和(自身を除く): 20490392

約数列:

[1, 2, 4, 8, 31, 37, 59, 62, 74, 118, 124, 148, 236, 248, 296, 472, 1147, 1369, 1829, 2183, 2294, 2738, 3658, 4366, 4588, 5476, 7316, 8732, 9176, 10952, 14632, 17464, 42439, 67673, 80771, 84878, 135346, 161542, 169756, 270692, 323084, 339512, 541384, 646168, 2503901, 5007802, 10015604, 20031208]

約数ペア:

[(1, 20031208), (2, 10015604), (4, 5007802), (8, 2503901), (31, 646168), (37, 541384), (59, 339512), (62, 323084), (74, 270692), (118, 169756), (124, 161542), (148, 135346), (236, 84878), (248, 80771), (296, 67673), (472, 42439), (1147, 17464), (1369, 14632), (1829, 10952), (2183, 9176), (2294, 8732), (2738, 7316), (3658, 5476), (4366, 4588)]