18784886937

素因数分解:

$3^1\times {\mathrm{53}}^2\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 26180921088

約数和(自身を除く): 7396034151

約数列:

[1, 3, 53, 83, 107, 159, 249, 251, 321, 753, 2809, 4399, 5671, 8427, 8881, 13197, 13303, 17013, 20833, 26643, 26857, 39909, 62499, 80571, 233147, 300563, 470693, 699441, 705059, 901689, 1104149, 1412079, 1423421, 2115177, 2229131, 3312447, 4270263, 6687393, 24946729, 58519897, 74840187, 75441313, 118143943, 175559691, 226323939, 354431829, 6261628979, 18784886937]

約数ペア:

[(1, 18784886937), (3, 6261628979), (53, 354431829), (83, 226323939), (107, 175559691), (159, 118143943), (249, 75441313), (251, 74840187), (321, 58519897), (753, 24946729), (2809, 6687393), (4399, 4270263), (5671, 3312447), (8427, 2229131), (8881, 2115177), (13197, 1423421), (13303, 1412079), (17013, 1104149), (20833, 901689), (26643, 705059), (26857, 699441), (39909, 470693), (62499, 300563), (80571, 233147)]