20876877

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{163}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 36840960

約数和(自身を除く): 15964083

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 107, 133, 163, 171, 321, 399, 489, 749, 963, 1141, 1197, 1467, 2033, 2247, 3097, 3423, 6099, 6741, 9291, 10269, 14231, 17441, 18297, 21679, 27873, 42693, 52323, 65037, 122087, 128079, 156969, 195111, 331379, 366261, 994137, 1098783, 2319653, 2982411, 6958959, 20876877]

約数ペア:

[(1, 20876877), (3, 6958959), (7, 2982411), (9, 2319653), (19, 1098783), (21, 994137), (57, 366261), (63, 331379), (107, 195111), (133, 156969), (163, 128079), (171, 122087), (321, 65037), (399, 52323), (489, 42693), (749, 27873), (963, 21679), (1141, 18297), (1197, 17441), (1467, 14231), (2033, 10269), (2247, 9291), (3097, 6741), (3423, 6099)]