21905488

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1753}}^1$

素因数の和:1843

約数の個数: 40

約数和(自身を含む): 46979136

約数和(自身を除く): 25073648

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1562, 1753, 3124, 3506, 6248, 7012, 12496, 14024, 19283, 28048, 38566, 77132, 124463, 154264, 248926, 308528, 497852, 995704, 1369093, 1991408, 2738186, 5476372, 10952744, 21905488]

約数ペア:

[(1, 21905488), (2, 10952744), (4, 5476372), (8, 2738186), (11, 1991408), (16, 1369093), (22, 995704), (44, 497852), (71, 308528), (88, 248926), (142, 154264), (176, 124463), (284, 77132), (568, 38566), (781, 28048), (1136, 19283), (1562, 14024), (1753, 12496), (3124, 7012), (3506, 6248)]