18998000

素因数分解:

$2^4\times 5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:112

約数の個数: 160

約数和(自身を含む): 55710720

約数和(自身を除く): 36712720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 35, 40, 46, 50, 56, 59, 70, 80, 92, 100, 112, 115, 118, 125, 140, 161, 175, 184, 200, 230, 236, 250, 280, 295, 322, 350, 368, 400, 413, 460, 472, 500, 560, 575, 590, 644, 700, 805, 826, 875, 920, 944, 1000, 1150, 1180, 1288, 1357, 1400, 1475, 1610, 1652, 1750, 1840, 2000, 2065, 2300, 2360, 2576, 2714, 2800, 2875, 2950, 3220, 3304, 3500, 4025, 4130, 4600, 4720, 5428, 5750, 5900, 6440, 6608, 6785, 7000, 7375, 8050, 8260, 9200, 9499, 10325, 10856, 11500, 11800, 12880, 13570, 14000, 14750, 16100, 16520, 18998, 20125, 20650, 21712, 23000, 23600, 27140, 29500, 32200, 33040, 33925, 37996, 40250, 41300, 46000, 47495, 51625, 54280, 59000, 64400, 67850, 75992, 80500, 82600, 94990, 103250, 108560, 118000, 135700, 151984, 161000, 165200, 169625, 189980, 206500, 237475, 271400, 322000, 339250, 379960, 413000, 474950, 542800, 678500, 759920, 826000, 949900, 1187375, 1357000, 1899800, 2374750, 2714000, 3799600, 4749500, 9499000, 18998000]

約数ペア:

[(1, 18998000), (2, 9499000), (4, 4749500), (5, 3799600), (7, 2714000), (8, 2374750), (10, 1899800), (14, 1357000), (16, 1187375), (20, 949900), (23, 826000), (25, 759920), (28, 678500), (35, 542800), (40, 474950), (46, 413000), (50, 379960), (56, 339250), (59, 322000), (70, 271400), (80, 237475), (92, 206500), (100, 189980), (112, 169625), (115, 165200), (118, 161000), (125, 151984), (140, 135700), (161, 118000), (175, 108560), (184, 103250), (200, 94990), (230, 82600), (236, 80500), (250, 75992), (280, 67850), (295, 64400), (322, 59000), (350, 54280), (368, 51625), (400, 47495), (413, 46000), (460, 41300), (472, 40250), (500, 37996), (560, 33925), (575, 33040), (590, 32200), (644, 29500), (700, 27140), (805, 23600), (826, 23000), (875, 21712), (920, 20650), (944, 20125), (1000, 18998), (1150, 16520), (1180, 16100), (1288, 14750), (1357, 14000), (1400, 13570), (1475, 12880), (1610, 11800), (1652, 11500), (1750, 10856), (1840, 10325), (2000, 9499), (2065, 9200), (2300, 8260), (2360, 8050), (2576, 7375), (2714, 7000), (2800, 6785), (2875, 6608), (2950, 6440), (3220, 5900), (3304, 5750), (3500, 5428), (4025, 4720), (4130, 4600)]