287700813

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 449729280

約数和(自身を除く): 162028467

約数列:

[1, 3, 9, 23, 41, 69, 109, 123, 207, 311, 327, 369, 933, 943, 981, 2507, 2799, 2829, 4469, 7153, 7521, 8487, 12751, 13407, 21459, 22563, 33899, 38253, 40221, 64377, 101697, 102787, 114759, 293273, 305091, 308361, 779677, 879819, 925083, 1389859, 2339031, 2639457, 4169577, 7017093, 12508731, 31966757, 95900271, 287700813]

約数ペア:

[(1, 287700813), (3, 95900271), (9, 31966757), (23, 12508731), (41, 7017093), (69, 4169577), (109, 2639457), (123, 2339031), (207, 1389859), (311, 925083), (327, 879819), (369, 779677), (933, 308361), (943, 305091), (981, 293273), (2507, 114759), (2799, 102787), (2829, 101697), (4469, 64377), (7153, 40221), (7521, 38253), (8487, 33899), (12751, 22563), (13407, 21459)]