20249744

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1129}}^1$

素因数の和:1215

約数の個数: 40

約数和(自身を含む): 42036000

約数和(自身を除く): 21786256

約数列:

[1, 2, 4, 8, 16, 19, 38, 59, 76, 118, 152, 236, 304, 472, 944, 1121, 1129, 2242, 2258, 4484, 4516, 8968, 9032, 17936, 18064, 21451, 42902, 66611, 85804, 133222, 171608, 266444, 343216, 532888, 1065776, 1265609, 2531218, 5062436, 10124872, 20249744]

約数ペア:

[(1, 20249744), (2, 10124872), (4, 5062436), (8, 2531218), (16, 1265609), (19, 1065776), (38, 532888), (59, 343216), (76, 266444), (118, 171608), (152, 133222), (236, 85804), (304, 66611), (472, 42902), (944, 21451), (1121, 18064), (1129, 17936), (2242, 9032), (2258, 8968), (4484, 4516)]