20748500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{2441}}^1$

素因数の和:2477

約数の個数: 48

約数和(自身を含む): 47999952

約数和(自身を除く): 27251452

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 125, 170, 250, 340, 425, 500, 850, 1700, 2125, 2441, 4250, 4882, 8500, 9764, 12205, 24410, 41497, 48820, 61025, 82994, 122050, 165988, 207485, 244100, 305125, 414970, 610250, 829940, 1037425, 1220500, 2074850, 4149700, 5187125, 10374250, 20748500]

約数ペア:

[(1, 20748500), (2, 10374250), (4, 5187125), (5, 4149700), (10, 2074850), (17, 1220500), (20, 1037425), (25, 829940), (34, 610250), (50, 414970), (68, 305125), (85, 244100), (100, 207485), (125, 165988), (170, 122050), (250, 82994), (340, 61025), (425, 48820), (500, 41497), (850, 24410), (1700, 12205), (2125, 9764), (2441, 8500), (4250, 4882)]