208697745

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{3853}}^1$

素因数の和:4041

約数の個数: 32

約数和(自身を含む): 350744832

約数和(自身を除く): 142047087

約数列:

[1, 3, 5, 15, 23, 69, 115, 157, 345, 471, 785, 2355, 3611, 3853, 10833, 11559, 18055, 19265, 54165, 57795, 88619, 265857, 443095, 604921, 1329285, 1814763, 3024605, 9073815, 13913183, 41739549, 69565915, 208697745]

約数ペア:

[(1, 208697745), (3, 69565915), (5, 41739549), (15, 13913183), (23, 9073815), (69, 3024605), (115, 1814763), (157, 1329285), (345, 604921), (471, 443095), (785, 265857), (2355, 88619), (3611, 57795), (3853, 54165), (10833, 19265), (11559, 18055)]