18660815

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^2$

素因数の和:203

約数の個数: 24

約数和(自身を含む): 24513840

約数和(自身を除く): 5853025

約数列:

[1, 5, 17, 59, 61, 85, 295, 305, 1003, 1037, 3599, 3721, 5015, 5185, 17995, 18605, 61183, 63257, 219539, 305915, 316285, 1097695, 3732163, 18660815]

約数ペア:

[(1, 18660815), (5, 3732163), (17, 1097695), (59, 316285), (61, 305915), (85, 219539), (295, 63257), (305, 61183), (1003, 18605), (1037, 17995), (3599, 5185), (3721, 5015)]