53125000

素因数分解:

$2^3\times 5^8\times {\mathrm{17}}^1$

素因数の和:63

約数の個数: 72

約数和(自身を含む): 131835870

約数和(自身を除く): 78710870

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, 625, 680, 850, 1000, 1250, 1700, 2125, 2500, 3125, 3400, 4250, 5000, 6250, 8500, 10625, 12500, 15625, 17000, 21250, 25000, 31250, 42500, 53125, 62500, 78125, 85000, 106250, 125000, 156250, 212500, 265625, 312500, 390625, 425000, 531250, 625000, 781250, 1062500, 1328125, 1562500, 2125000, 2656250, 3125000, 5312500, 6640625, 10625000, 13281250, 26562500, 53125000]

約数ペア:

[(1, 53125000), (2, 26562500), (4, 13281250), (5, 10625000), (8, 6640625), (10, 5312500), (17, 3125000), (20, 2656250), (25, 2125000), (34, 1562500), (40, 1328125), (50, 1062500), (68, 781250), (85, 625000), (100, 531250), (125, 425000), (136, 390625), (170, 312500), (200, 265625), (250, 212500), (340, 156250), (425, 125000), (500, 106250), (625, 85000), (680, 78125), (850, 62500), (1000, 53125), (1250, 42500), (1700, 31250), (2125, 25000), (2500, 21250), (3125, 17000), (3400, 15625), (4250, 12500), (5000, 10625), (6250, 8500)]