18684704

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1$

素因数の和:457

約数の個数: 48

約数和(自身を含む): 38763648

約数和(自身を除く): 20078944

約数列:

[1, 2, 4, 8, 16, 32, 37, 43, 74, 86, 148, 172, 296, 344, 367, 592, 688, 734, 1184, 1376, 1468, 1591, 2936, 3182, 5872, 6364, 11744, 12728, 13579, 15781, 25456, 27158, 31562, 50912, 54316, 63124, 108632, 126248, 217264, 252496, 434528, 504992, 583897, 1167794, 2335588, 4671176, 9342352, 18684704]

約数ペア:

[(1, 18684704), (2, 9342352), (4, 4671176), (8, 2335588), (16, 1167794), (32, 583897), (37, 504992), (43, 434528), (74, 252496), (86, 217264), (148, 126248), (172, 108632), (296, 63124), (344, 54316), (367, 50912), (592, 31562), (688, 27158), (734, 25456), (1184, 15781), (1376, 13579), (1468, 12728), (1591, 11744), (2936, 6364), (3182, 5872)]