28178000

素因数分解:

$2^4\times 5^3\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:289

約数の個数: 80

約数和(自身を含む): 69425616

約数和(自身を除く): 41247616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 73, 80, 100, 125, 146, 193, 200, 250, 292, 365, 386, 400, 500, 584, 730, 772, 965, 1000, 1168, 1460, 1544, 1825, 1930, 2000, 2920, 3088, 3650, 3860, 4825, 5840, 7300, 7720, 9125, 9650, 14089, 14600, 15440, 18250, 19300, 24125, 28178, 29200, 36500, 38600, 48250, 56356, 70445, 73000, 77200, 96500, 112712, 140890, 146000, 193000, 225424, 281780, 352225, 386000, 563560, 704450, 1127120, 1408900, 1761125, 2817800, 3522250, 5635600, 7044500, 14089000, 28178000]

約数ペア:

[(1, 28178000), (2, 14089000), (4, 7044500), (5, 5635600), (8, 3522250), (10, 2817800), (16, 1761125), (20, 1408900), (25, 1127120), (40, 704450), (50, 563560), (73, 386000), (80, 352225), (100, 281780), (125, 225424), (146, 193000), (193, 146000), (200, 140890), (250, 112712), (292, 96500), (365, 77200), (386, 73000), (400, 70445), (500, 56356), (584, 48250), (730, 38600), (772, 36500), (965, 29200), (1000, 28178), (1168, 24125), (1460, 19300), (1544, 18250), (1825, 15440), (1930, 14600), (2000, 14089), (2920, 9650), (3088, 9125), (3650, 7720), (3860, 7300), (4825, 5840)]