20104119

素因数分解:

$3^5\times 7^1\times {\mathrm{53}}^1\times {\mathrm{223}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 35223552

約数和(自身を除く): 15119433

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 223, 243, 371, 477, 567, 669, 1113, 1431, 1561, 1701, 2007, 3339, 4293, 4683, 6021, 10017, 11819, 12879, 14049, 18063, 30051, 35457, 42147, 54189, 82733, 90153, 106371, 126441, 248199, 319113, 379323, 744597, 957339, 2233791, 2872017, 6701373, 20104119]

約数ペア:

[(1, 20104119), (3, 6701373), (7, 2872017), (9, 2233791), (21, 957339), (27, 744597), (53, 379323), (63, 319113), (81, 248199), (159, 126441), (189, 106371), (223, 90153), (243, 82733), (371, 54189), (477, 42147), (567, 35457), (669, 30051), (1113, 18063), (1431, 14049), (1561, 12879), (1701, 11819), (2007, 10017), (3339, 6021), (4293, 4683)]