19712265

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3361}}^1$

素因数の和:3409

約数の個数: 32

約数和(自身を含む): 34857216

約数和(自身を除く): 15144951

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 255, 345, 391, 1173, 1955, 3361, 5865, 10083, 16805, 50415, 57137, 77303, 171411, 231909, 285685, 386515, 857055, 1159545, 1314151, 3942453, 6570755, 19712265]

約数ペア:

[(1, 19712265), (3, 6570755), (5, 3942453), (15, 1314151), (17, 1159545), (23, 857055), (51, 386515), (69, 285685), (85, 231909), (115, 171411), (255, 77303), (345, 57137), (391, 50415), (1173, 16805), (1955, 10083), (3361, 5865)]