21991992

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^2\times {\mathrm{7573}}^1$

素因数の和:7604

約数の個数: 48

約数和(自身を含む): 60440520

約数和(自身を除く): 38448528

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 121, 132, 242, 264, 363, 484, 726, 968, 1452, 2904, 7573, 15146, 22719, 30292, 45438, 60584, 83303, 90876, 166606, 181752, 249909, 333212, 499818, 666424, 916333, 999636, 1832666, 1999272, 2748999, 3665332, 5497998, 7330664, 10995996, 21991992]

約数ペア:

[(1, 21991992), (2, 10995996), (3, 7330664), (4, 5497998), (6, 3665332), (8, 2748999), (11, 1999272), (12, 1832666), (22, 999636), (24, 916333), (33, 666424), (44, 499818), (66, 333212), (88, 249909), (121, 181752), (132, 166606), (242, 90876), (264, 83303), (363, 60584), (484, 45438), (726, 30292), (968, 22719), (1452, 15146), (2904, 7573)]