18490000

素因数分解:

$2^4\times 5^4\times {\mathrm{43}}^2$

素因数の和:114

約数の個数: 75

約数和(自身を含む): 45831423

約数和(自身を除く): 27341423

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 125, 172, 200, 215, 250, 344, 400, 430, 500, 625, 688, 860, 1000, 1075, 1250, 1720, 1849, 2000, 2150, 2500, 3440, 3698, 4300, 5000, 5375, 7396, 8600, 9245, 10000, 10750, 14792, 17200, 18490, 21500, 26875, 29584, 36980, 43000, 46225, 53750, 73960, 86000, 92450, 107500, 147920, 184900, 215000, 231125, 369800, 430000, 462250, 739600, 924500, 1155625, 1849000, 2311250, 3698000, 4622500, 9245000, 18490000]

約数ペア:

[(1, 18490000), (2, 9245000), (4, 4622500), (5, 3698000), (8, 2311250), (10, 1849000), (16, 1155625), (20, 924500), (25, 739600), (40, 462250), (43, 430000), (50, 369800), (80, 231125), (86, 215000), (100, 184900), (125, 147920), (172, 107500), (200, 92450), (215, 86000), (250, 73960), (344, 53750), (400, 46225), (430, 43000), (500, 36980), (625, 29584), (688, 26875), (860, 21500), (1000, 18490), (1075, 17200), (1250, 14792), (1720, 10750), (1849, 10000), (2000, 9245), (2150, 8600), (2500, 7396), (3440, 5375), (3698, 5000)]