19881500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{2339}}^1$

素因数の和:2375

約数の個数: 48

約数和(自身を含む): 45995040

約数和(自身を除く): 26113540

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, 2339, 4250, 4678, 8500, 9356, 11695, 23390, 39763, 46780, 58475, 79526, 116950, 159052, 198815, 233900, 292375, 397630, 584750, 795260, 994075, 1169500, 1988150, 3976300, 4970375, 9940750, 19881500]

約数ペア:

[(1, 19881500), (2, 9940750), (4, 4970375), (5, 3976300), (10, 1988150), (17, 1169500), (20, 994075), (25, 795260), (34, 584750), (50, 397630), (68, 292375), (85, 233900), (100, 198815), (125, 159052), (170, 116950), (250, 79526), (340, 58475), (425, 46780), (500, 39763), (850, 23390), (1700, 11695), (2125, 9356), (2339, 8500), (4250, 4678)]