20886047

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{587}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 28449792

約数和(自身を除く): 7563745

約数列:

[1, 7, 13, 17, 23, 91, 119, 161, 221, 299, 391, 587, 1547, 2093, 2737, 4109, 5083, 7631, 9979, 13501, 35581, 53417, 69853, 94507, 129727, 175513, 229517, 908089, 1228591, 1606619, 2983721, 20886047]

約数ペア:

[(1, 20886047), (7, 2983721), (13, 1606619), (17, 1228591), (23, 908089), (91, 229517), (119, 175513), (161, 129727), (221, 94507), (299, 69853), (391, 53417), (587, 35581), (1547, 13501), (2093, 9979), (2737, 7631), (4109, 5083)]