21005334

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3547}}^1$

素因数の和:3609

約数の個数: 48

約数和(自身を含む): 53134848

約数和(自身を除く): 32129514

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 47, 63, 94, 126, 141, 282, 329, 423, 658, 846, 987, 1974, 2961, 3547, 5922, 7094, 10641, 21282, 24829, 31923, 49658, 63846, 74487, 148974, 166709, 223461, 333418, 446922, 500127, 1000254, 1166963, 1500381, 2333926, 3000762, 3500889, 7001778, 10502667, 21005334]

約数ペア:

[(1, 21005334), (2, 10502667), (3, 7001778), (6, 3500889), (7, 3000762), (9, 2333926), (14, 1500381), (18, 1166963), (21, 1000254), (42, 500127), (47, 446922), (63, 333418), (94, 223461), (126, 166709), (141, 148974), (282, 74487), (329, 63846), (423, 49658), (658, 31923), (846, 24829), (987, 21282), (1974, 10641), (2961, 7094), (3547, 5922)]