18515000

素因数分解:

$2^3\times 5^4\times 7^1\times {\mathrm{23}}^2$

素因数の和:79

約数の個数: 120

約数和(自身を含む): 51827160

約数和(自身を除く): 33312160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 25, 28, 35, 40, 46, 50, 56, 70, 92, 100, 115, 125, 140, 161, 175, 184, 200, 230, 250, 280, 322, 350, 460, 500, 529, 575, 625, 644, 700, 805, 875, 920, 1000, 1058, 1150, 1250, 1288, 1400, 1610, 1750, 2116, 2300, 2500, 2645, 2875, 3220, 3500, 3703, 4025, 4232, 4375, 4600, 5000, 5290, 5750, 6440, 7000, 7406, 8050, 8750, 10580, 11500, 13225, 14375, 14812, 16100, 17500, 18515, 20125, 21160, 23000, 26450, 28750, 29624, 32200, 35000, 37030, 40250, 52900, 57500, 66125, 74060, 80500, 92575, 100625, 105800, 115000, 132250, 148120, 161000, 185150, 201250, 264500, 330625, 370300, 402500, 462875, 529000, 661250, 740600, 805000, 925750, 1322500, 1851500, 2314375, 2645000, 3703000, 4628750, 9257500, 18515000]

約数ペア:

[(1, 18515000), (2, 9257500), (4, 4628750), (5, 3703000), (7, 2645000), (8, 2314375), (10, 1851500), (14, 1322500), (20, 925750), (23, 805000), (25, 740600), (28, 661250), (35, 529000), (40, 462875), (46, 402500), (50, 370300), (56, 330625), (70, 264500), (92, 201250), (100, 185150), (115, 161000), (125, 148120), (140, 132250), (161, 115000), (175, 105800), (184, 100625), (200, 92575), (230, 80500), (250, 74060), (280, 66125), (322, 57500), (350, 52900), (460, 40250), (500, 37030), (529, 35000), (575, 32200), (625, 29624), (644, 28750), (700, 26450), (805, 23000), (875, 21160), (920, 20125), (1000, 18515), (1058, 17500), (1150, 16100), (1250, 14812), (1288, 14375), (1400, 13225), (1610, 11500), (1750, 10580), (2116, 8750), (2300, 8050), (2500, 7406), (2645, 7000), (2875, 6440), (3220, 5750), (3500, 5290), (3703, 5000), (4025, 4600), (4232, 4375)]