17816988

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 48920592

約数和(自身を除く): 31103604

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 157, 193, 196, 294, 314, 386, 471, 579, 588, 628, 772, 942, 1099, 1158, 1351, 1884, 2198, 2316, 2702, 3297, 4053, 4396, 5404, 6594, 7693, 8106, 9457, 13188, 15386, 16212, 18914, 23079, 28371, 30301, 30772, 37828, 46158, 56742, 60602, 90903, 92316, 113484, 121204, 181806, 212107, 363612, 424214, 636321, 848428, 1272642, 1484749, 2545284, 2969498, 4454247, 5938996, 8908494, 17816988]

約数ペア:

[(1, 17816988), (2, 8908494), (3, 5938996), (4, 4454247), (6, 2969498), (7, 2545284), (12, 1484749), (14, 1272642), (21, 848428), (28, 636321), (42, 424214), (49, 363612), (84, 212107), (98, 181806), (147, 121204), (157, 113484), (193, 92316), (196, 90903), (294, 60602), (314, 56742), (386, 46158), (471, 37828), (579, 30772), (588, 30301), (628, 28371), (772, 23079), (942, 18914), (1099, 16212), (1158, 15386), (1351, 13188), (1884, 9457), (2198, 8106), (2316, 7693), (2702, 6594), (3297, 5404), (4053, 4396)]