21031264

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{173}}^1$

素因数の和:343

約数の個数: 48

約数和(自身を含む): 43409520

約数和(自身を除く): 22378256

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 116, 131, 173, 232, 262, 346, 464, 524, 692, 928, 1048, 1384, 2096, 2768, 3799, 4192, 5017, 5536, 7598, 10034, 15196, 20068, 22663, 30392, 40136, 45326, 60784, 80272, 90652, 121568, 160544, 181304, 362608, 657227, 725216, 1314454, 2628908, 5257816, 10515632, 21031264]

約数ペア:

[(1, 21031264), (2, 10515632), (4, 5257816), (8, 2628908), (16, 1314454), (29, 725216), (32, 657227), (58, 362608), (116, 181304), (131, 160544), (173, 121568), (232, 90652), (262, 80272), (346, 60784), (464, 45326), (524, 40136), (692, 30392), (928, 22663), (1048, 20068), (1384, 15196), (2096, 10034), (2768, 7598), (3799, 5536), (4192, 5017)]