20868471

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{1031}}^1$

素因数の和:1223

約数の個数: 24

約数和(自身を含む): 32681376

約数和(自身を除く): 11812905

約数列:

[1, 3, 9, 13, 39, 117, 173, 519, 1031, 1557, 2249, 3093, 6747, 9279, 13403, 20241, 40209, 120627, 178363, 535089, 1605267, 2318719, 6956157, 20868471]

約数ペア:

[(1, 20868471), (3, 6956157), (9, 2318719), (13, 1605267), (39, 535089), (117, 178363), (173, 120627), (519, 40209), (1031, 20241), (1557, 13403), (2249, 9279), (3093, 6747)]