5375000

素因数分解:

$2^3\times 5^6\times {\mathrm{43}}^1$

素因数の和:79

約数の個数: 56

約数和(自身を含む): 12890460

約数和(自身を除く): 7515460

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 500, 625, 860, 1000, 1075, 1250, 1720, 2150, 2500, 3125, 4300, 5000, 5375, 6250, 8600, 10750, 12500, 15625, 21500, 25000, 26875, 31250, 43000, 53750, 62500, 107500, 125000, 134375, 215000, 268750, 537500, 671875, 1075000, 1343750, 2687500, 5375000]

約数ペア:

[(1, 5375000), (2, 2687500), (4, 1343750), (5, 1075000), (8, 671875), (10, 537500), (20, 268750), (25, 215000), (40, 134375), (43, 125000), (50, 107500), (86, 62500), (100, 53750), (125, 43000), (172, 31250), (200, 26875), (215, 25000), (250, 21500), (344, 15625), (430, 12500), (500, 10750), (625, 8600), (860, 6250), (1000, 5375), (1075, 5000), (1250, 4300), (1720, 3125), (2150, 2500)]