20988708

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1621}}^1$

素因数の和:1724

約数の個数: 48

約数和(自身を含む): 53409216

約数和(自身を除く): 32420508

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 83, 156, 166, 249, 332, 498, 996, 1079, 1621, 2158, 3237, 3242, 4316, 4863, 6474, 6484, 9726, 12948, 19452, 21073, 42146, 63219, 84292, 126438, 134543, 252876, 269086, 403629, 538172, 807258, 1614516, 1749059, 3498118, 5247177, 6996236, 10494354, 20988708]

約数ペア:

[(1, 20988708), (2, 10494354), (3, 6996236), (4, 5247177), (6, 3498118), (12, 1749059), (13, 1614516), (26, 807258), (39, 538172), (52, 403629), (78, 269086), (83, 252876), (156, 134543), (166, 126438), (249, 84292), (332, 63219), (498, 42146), (996, 21073), (1079, 19452), (1621, 12948), (2158, 9726), (3237, 6484), (3242, 6474), (4316, 4863)]