217211960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{775757}}^1$

素因数の和:775775

約数の個数: 32

約数和(自身を含む): 558545760

約数和(自身を除く): 341333800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 775757, 1551514, 3103028, 3878785, 5430299, 6206056, 7757570, 10860598, 15515140, 21721196, 27151495, 31030280, 43442392, 54302990, 108605980, 217211960]

約数ペア:

[(1, 217211960), (2, 108605980), (4, 54302990), (5, 43442392), (7, 31030280), (8, 27151495), (10, 21721196), (14, 15515140), (20, 10860598), (28, 7757570), (35, 6206056), (40, 5430299), (56, 3878785), (70, 3103028), (140, 1551514), (280, 775757)]