20791000

素因数分解:

$2^3\times 5^3\times {\mathrm{17}}^1\times {\mathrm{1223}}^1$

素因数の和:1261

約数の個数: 64

約数和(自身を含む): 51554880

約数和(自身を除く): 30763880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 125, 136, 170, 200, 250, 340, 425, 500, 680, 850, 1000, 1223, 1700, 2125, 2446, 3400, 4250, 4892, 6115, 8500, 9784, 12230, 17000, 20791, 24460, 30575, 41582, 48920, 61150, 83164, 103955, 122300, 152875, 166328, 207910, 244600, 305750, 415820, 519775, 611500, 831640, 1039550, 1223000, 2079100, 2598875, 4158200, 5197750, 10395500, 20791000]

約数ペア:

[(1, 20791000), (2, 10395500), (4, 5197750), (5, 4158200), (8, 2598875), (10, 2079100), (17, 1223000), (20, 1039550), (25, 831640), (34, 611500), (40, 519775), (50, 415820), (68, 305750), (85, 244600), (100, 207910), (125, 166328), (136, 152875), (170, 122300), (200, 103955), (250, 83164), (340, 61150), (425, 48920), (500, 41582), (680, 30575), (850, 24460), (1000, 20791), (1223, 17000), (1700, 12230), (2125, 9784), (2446, 8500), (3400, 6115), (4250, 4892)]