20349664

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:719

約数の個数: 48

約数和(自身を含む): 42844032

約数和(自身を除く): 22494368

約数列:

[1, 2, 4, 8, 16, 23, 32, 43, 46, 86, 92, 172, 184, 344, 368, 643, 688, 736, 989, 1286, 1376, 1978, 2572, 3956, 5144, 7912, 10288, 14789, 15824, 20576, 27649, 29578, 31648, 55298, 59156, 110596, 118312, 221192, 236624, 442384, 473248, 635927, 884768, 1271854, 2543708, 5087416, 10174832, 20349664]

約数ペア:

[(1, 20349664), (2, 10174832), (4, 5087416), (8, 2543708), (16, 1271854), (23, 884768), (32, 635927), (43, 473248), (46, 442384), (86, 236624), (92, 221192), (172, 118312), (184, 110596), (344, 59156), (368, 55298), (643, 31648), (688, 29578), (736, 27649), (989, 20576), (1286, 15824), (1376, 14789), (1978, 10288), (2572, 7912), (3956, 5144)]