12700000

素因数分解:

$2^5\times 5^5\times {\mathrm{127}}^1$

素因数の和:162

約数の個数: 72

約数和(自身を含む): 31497984

約数和(自身を除く): 18797984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 127, 160, 200, 250, 254, 400, 500, 508, 625, 635, 800, 1000, 1016, 1250, 1270, 2000, 2032, 2500, 2540, 3125, 3175, 4000, 4064, 5000, 5080, 6250, 6350, 10000, 10160, 12500, 12700, 15875, 20000, 20320, 25000, 25400, 31750, 50000, 50800, 63500, 79375, 100000, 101600, 127000, 158750, 254000, 317500, 396875, 508000, 635000, 793750, 1270000, 1587500, 2540000, 3175000, 6350000, 12700000]

約数ペア:

[(1, 12700000), (2, 6350000), (4, 3175000), (5, 2540000), (8, 1587500), (10, 1270000), (16, 793750), (20, 635000), (25, 508000), (32, 396875), (40, 317500), (50, 254000), (80, 158750), (100, 127000), (125, 101600), (127, 100000), (160, 79375), (200, 63500), (250, 50800), (254, 50000), (400, 31750), (500, 25400), (508, 25000), (625, 20320), (635, 20000), (800, 15875), (1000, 12700), (1016, 12500), (1250, 10160), (1270, 10000), (2000, 6350), (2032, 6250), (2500, 5080), (2540, 5000), (3125, 4064), (3175, 4000)]