20372020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{661}}^1$

素因数の和:760

約数の個数: 48

約数和(自身を含む): 45376128

約数和(自身を除く): 25004108

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 67, 92, 115, 134, 230, 268, 335, 460, 661, 670, 1322, 1340, 1541, 2644, 3082, 3305, 6164, 6610, 7705, 13220, 15203, 15410, 30406, 30820, 44287, 60812, 76015, 88574, 152030, 177148, 221435, 304060, 442870, 885740, 1018601, 2037202, 4074404, 5093005, 10186010, 20372020]

約数ペア:

[(1, 20372020), (2, 10186010), (4, 5093005), (5, 4074404), (10, 2037202), (20, 1018601), (23, 885740), (46, 442870), (67, 304060), (92, 221435), (115, 177148), (134, 152030), (230, 88574), (268, 76015), (335, 60812), (460, 44287), (661, 30820), (670, 30406), (1322, 15410), (1340, 15203), (1541, 13220), (2644, 7705), (3082, 6610), (3305, 6164)]