15978800

素因数分解:

$2^4\times 5^2\times {\mathrm{43}}^1\times {\mathrm{929}}^1$

素因数の和:990

約数の個数: 60

約数和(自身を含む): 39324120

約数和(自身を除く): 23345320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 172, 200, 215, 344, 400, 430, 688, 860, 929, 1075, 1720, 1858, 2150, 3440, 3716, 4300, 4645, 7432, 8600, 9290, 14864, 17200, 18580, 23225, 37160, 39947, 46450, 74320, 79894, 92900, 159788, 185800, 199735, 319576, 371600, 399470, 639152, 798940, 998675, 1597880, 1997350, 3195760, 3994700, 7989400, 15978800]

約数ペア:

[(1, 15978800), (2, 7989400), (4, 3994700), (5, 3195760), (8, 1997350), (10, 1597880), (16, 998675), (20, 798940), (25, 639152), (40, 399470), (43, 371600), (50, 319576), (80, 199735), (86, 185800), (100, 159788), (172, 92900), (200, 79894), (215, 74320), (344, 46450), (400, 39947), (430, 37160), (688, 23225), (860, 18580), (929, 17200), (1075, 14864), (1720, 9290), (1858, 8600), (2150, 7432), (3440, 4645), (3716, 4300)]