217165720

素因数分解:

$2^3\times 5^1\times {\mathrm{5429143}}^1$

素因数の和:5429154

約数の個数: 16

約数和(自身を含む): 488622960

約数和(自身を除く): 271457240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5429143, 10858286, 21716572, 27145715, 43433144, 54291430, 108582860, 217165720]

約数ペア:

[(1, 217165720), (2, 108582860), (4, 54291430), (5, 43433144), (8, 27145715), (10, 21716572), (20, 10858286), (40, 5429143)]