18137980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7621}}^1$

素因数の和:7654

約数の個数: 48

約数和(自身を含む): 46097856

約数和(自身を除く): 27959876

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 7621, 15242, 30484, 38105, 53347, 76210, 106694, 129557, 152420, 213388, 259114, 266735, 518228, 533470, 647785, 906899, 1066940, 1295570, 1813798, 2591140, 3627596, 4534495, 9068990, 18137980]

約数ペア:

[(1, 18137980), (2, 9068990), (4, 4534495), (5, 3627596), (7, 2591140), (10, 1813798), (14, 1295570), (17, 1066940), (20, 906899), (28, 647785), (34, 533470), (35, 518228), (68, 266735), (70, 259114), (85, 213388), (119, 152420), (140, 129557), (170, 106694), (238, 76210), (340, 53347), (476, 38105), (595, 30484), (1190, 15242), (2380, 7621)]