21565605

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3677}}^1$

素因数の和:3725

約数の個数: 32

約数和(自身を含む): 38133504

約数和(自身を除く): 16567899

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 255, 345, 391, 1173, 1955, 3677, 5865, 11031, 18385, 55155, 62509, 84571, 187527, 253713, 312545, 422855, 937635, 1268565, 1437707, 4313121, 7188535, 21565605]

約数ペア:

[(1, 21565605), (3, 7188535), (5, 4313121), (15, 1437707), (17, 1268565), (23, 937635), (51, 422855), (69, 312545), (85, 253713), (115, 187527), (255, 84571), (345, 62509), (391, 55155), (1173, 18385), (1955, 11031), (3677, 5865)]