21091464

素因数分解:

$2^3\times 3^2\times {\mathrm{457}}^1\times {\mathrm{641}}^1$

素因数の和:1110

約数の個数: 48

約数和(自身を含む): 57337020

約数和(自身を除く): 36245556

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 457, 641, 914, 1282, 1371, 1828, 1923, 2564, 2742, 3656, 3846, 4113, 5128, 5484, 5769, 7692, 8226, 10968, 11538, 15384, 16452, 23076, 32904, 46152, 292937, 585874, 878811, 1171748, 1757622, 2343496, 2636433, 3515244, 5272866, 7030488, 10545732, 21091464]

約数ペア:

[(1, 21091464), (2, 10545732), (3, 7030488), (4, 5272866), (6, 3515244), (8, 2636433), (9, 2343496), (12, 1757622), (18, 1171748), (24, 878811), (36, 585874), (72, 292937), (457, 46152), (641, 32904), (914, 23076), (1282, 16452), (1371, 15384), (1828, 11538), (1923, 10968), (2564, 8226), (2742, 7692), (3656, 5769), (3846, 5484), (4113, 5128)]