212500000

素因数分解:

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

素因数の和:67

約数の個数: 108

約数和(自身を含む): 553710654

約数和(自身を除く): 341210654

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 68, 80, 85, 100, 125, 136, 160, 170, 200, 250, 272, 340, 400, 425, 500, 544, 625, 680, 800, 850, 1000, 1250, 1360, 1700, 2000, 2125, 2500, 2720, 3125, 3400, 4000, 4250, 5000, 6250, 6800, 8500, 10000, 10625, 12500, 13600, 15625, 17000, 20000, 21250, 25000, 31250, 34000, 42500, 50000, 53125, 62500, 68000, 78125, 85000, 100000, 106250, 125000, 156250, 170000, 212500, 250000, 265625, 312500, 340000, 390625, 425000, 500000, 531250, 625000, 781250, 850000, 1062500, 1250000, 1328125, 1562500, 1700000, 2125000, 2500000, 2656250, 3125000, 4250000, 5312500, 6250000, 6640625, 8500000, 10625000, 12500000, 13281250, 21250000, 26562500, 42500000, 53125000, 106250000, 212500000]

約数ペア:

[(1, 212500000), (2, 106250000), (4, 53125000), (5, 42500000), (8, 26562500), (10, 21250000), (16, 13281250), (17, 12500000), (20, 10625000), (25, 8500000), (32, 6640625), (34, 6250000), (40, 5312500), (50, 4250000), (68, 3125000), (80, 2656250), (85, 2500000), (100, 2125000), (125, 1700000), (136, 1562500), (160, 1328125), (170, 1250000), (200, 1062500), (250, 850000), (272, 781250), (340, 625000), (400, 531250), (425, 500000), (500, 425000), (544, 390625), (625, 340000), (680, 312500), (800, 265625), (850, 250000), (1000, 212500), (1250, 170000), (1360, 156250), (1700, 125000), (2000, 106250), (2125, 100000), (2500, 85000), (2720, 78125), (3125, 68000), (3400, 62500), (4000, 53125), (4250, 50000), (5000, 42500), (6250, 34000), (6800, 31250), (8500, 25000), (10000, 21250), (10625, 20000), (12500, 17000), (13600, 15625)]