20961984

素因数分解:

$2^6\times 3^1\times {\mathrm{43}}^1\times {\mathrm{2539}}^1$

素因数の和:2597

約数の個数: 56

約数和(自身を含む): 56774080

約数和(自身を除く): 35812096

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 43, 48, 64, 86, 96, 129, 172, 192, 258, 344, 516, 688, 1032, 1376, 2064, 2539, 2752, 4128, 5078, 7617, 8256, 10156, 15234, 20312, 30468, 40624, 60936, 81248, 109177, 121872, 162496, 218354, 243744, 327531, 436708, 487488, 655062, 873416, 1310124, 1746832, 2620248, 3493664, 5240496, 6987328, 10480992, 20961984]

約数ペア:

[(1, 20961984), (2, 10480992), (3, 6987328), (4, 5240496), (6, 3493664), (8, 2620248), (12, 1746832), (16, 1310124), (24, 873416), (32, 655062), (43, 487488), (48, 436708), (64, 327531), (86, 243744), (96, 218354), (129, 162496), (172, 121872), (192, 109177), (258, 81248), (344, 60936), (516, 40624), (688, 30468), (1032, 20312), (1376, 15234), (2064, 10156), (2539, 8256), (2752, 7617), (4128, 5078)]