28999000

素因数分解:

$2^3\times 5^3\times {\mathrm{47}}^1\times {\mathrm{617}}^1$

素因数の和:685

約数の個数: 64

約数和(自身を含む): 69413760

約数和(自身を除く): 40414760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 94, 100, 125, 188, 200, 235, 250, 376, 470, 500, 617, 940, 1000, 1175, 1234, 1880, 2350, 2468, 3085, 4700, 4936, 5875, 6170, 9400, 11750, 12340, 15425, 23500, 24680, 28999, 30850, 47000, 57998, 61700, 77125, 115996, 123400, 144995, 154250, 231992, 289990, 308500, 579980, 617000, 724975, 1159960, 1449950, 2899900, 3624875, 5799800, 7249750, 14499500, 28999000]

約数ペア:

[(1, 28999000), (2, 14499500), (4, 7249750), (5, 5799800), (8, 3624875), (10, 2899900), (20, 1449950), (25, 1159960), (40, 724975), (47, 617000), (50, 579980), (94, 308500), (100, 289990), (125, 231992), (188, 154250), (200, 144995), (235, 123400), (250, 115996), (376, 77125), (470, 61700), (500, 57998), (617, 47000), (940, 30850), (1000, 28999), (1175, 24680), (1234, 23500), (1880, 15425), (2350, 12340), (2468, 11750), (3085, 9400), (4700, 6170), (4936, 5875)]