2890000

素因数分解:

$2^4\times 5^4\times {\mathrm{17}}^2$

素因数の和:62

約数の個数: 75

約数和(自身を含む): 7432777

約数和(自身を除く): 4542777

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 125, 136, 170, 200, 250, 272, 289, 340, 400, 425, 500, 578, 625, 680, 850, 1000, 1156, 1250, 1360, 1445, 1700, 2000, 2125, 2312, 2500, 2890, 3400, 4250, 4624, 5000, 5780, 6800, 7225, 8500, 10000, 10625, 11560, 14450, 17000, 21250, 23120, 28900, 34000, 36125, 42500, 57800, 72250, 85000, 115600, 144500, 170000, 180625, 289000, 361250, 578000, 722500, 1445000, 2890000]

約数ペア:

[(1, 2890000), (2, 1445000), (4, 722500), (5, 578000), (8, 361250), (10, 289000), (16, 180625), (17, 170000), (20, 144500), (25, 115600), (34, 85000), (40, 72250), (50, 57800), (68, 42500), (80, 36125), (85, 34000), (100, 28900), (125, 23120), (136, 21250), (170, 17000), (200, 14450), (250, 11560), (272, 10625), (289, 10000), (340, 8500), (400, 7225), (425, 6800), (500, 5780), (578, 5000), (625, 4624), (680, 4250), (850, 3400), (1000, 2890), (1156, 2500), (1250, 2312), (1360, 2125), (1445, 2000)]