21876127

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7154273

約数列:

[1, 7, 13, 17, 79, 91, 119, 179, 221, 553, 1027, 1253, 1343, 1547, 2327, 3043, 7189, 9401, 14141, 16289, 17459, 21301, 39559, 98987, 122213, 183833, 240397, 276913, 1286831, 1682779, 3125161, 21876127]

約数ペア:

[(1, 21876127), (7, 3125161), (13, 1682779), (17, 1286831), (79, 276913), (91, 240397), (119, 183833), (179, 122213), (221, 98987), (553, 39559), (1027, 21301), (1253, 17459), (1343, 16289), (1547, 14141), (2327, 9401), (3043, 7189)]