18170320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:548

約数の個数: 80

約数和(自身を含む): 49068288

約数和(自身を除く): 30897968

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 457, 497, 560, 568, 710, 914, 994, 1136, 1420, 1828, 1988, 2285, 2485, 2840, 3199, 3656, 3976, 4570, 4970, 5680, 6398, 7312, 7952, 9140, 9940, 12796, 15995, 18280, 19880, 25592, 31990, 32447, 36560, 39760, 51184, 63980, 64894, 127960, 129788, 162235, 227129, 255920, 259576, 324470, 454258, 519152, 648940, 908516, 1135645, 1297880, 1817032, 2271290, 2595760, 3634064, 4542580, 9085160, 18170320]

約数ペア:

[(1, 18170320), (2, 9085160), (4, 4542580), (5, 3634064), (7, 2595760), (8, 2271290), (10, 1817032), (14, 1297880), (16, 1135645), (20, 908516), (28, 648940), (35, 519152), (40, 454258), (56, 324470), (70, 259576), (71, 255920), (80, 227129), (112, 162235), (140, 129788), (142, 127960), (280, 64894), (284, 63980), (355, 51184), (457, 39760), (497, 36560), (560, 32447), (568, 31990), (710, 25592), (914, 19880), (994, 18280), (1136, 15995), (1420, 12796), (1828, 9940), (1988, 9140), (2285, 7952), (2485, 7312), (2840, 6398), (3199, 5680), (3656, 4970), (3976, 4570)]