639285

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:157

約数の個数: 32

約数和(自身を含む): 1140480

約数和(自身を除く): 501195

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 109, 115, 255, 327, 345, 391, 545, 1173, 1635, 1853, 1955, 2507, 5559, 5865, 7521, 9265, 12535, 27795, 37605, 42619, 127857, 213095, 639285]

約数ペア:

[(1, 639285), (3, 213095), (5, 127857), (15, 42619), (17, 37605), (23, 27795), (51, 12535), (69, 9265), (85, 7521), (109, 5865), (115, 5559), (255, 2507), (327, 1955), (345, 1853), (391, 1635), (545, 1173)]