221156481

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{113}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 375072768

約数和(自身を除く): 153916287

約数列:

[1, 3, 7, 13, 21, 39, 67, 91, 107, 113, 201, 273, 321, 339, 469, 749, 791, 871, 1391, 1407, 1469, 2247, 2373, 2613, 4173, 4407, 6097, 7169, 7571, 9737, 10283, 12091, 18291, 21507, 22713, 29211, 30849, 36273, 50183, 52997, 84637, 93197, 98423, 150549, 157183, 158991, 253911, 279591, 295269, 471549, 652379, 688961, 810097, 1100281, 1957137, 2066883, 2430291, 3300843, 5670679, 10531261, 17012037, 31593783, 73718827, 221156481]

約数ペア:

[(1, 221156481), (3, 73718827), (7, 31593783), (13, 17012037), (21, 10531261), (39, 5670679), (67, 3300843), (91, 2430291), (107, 2066883), (113, 1957137), (201, 1100281), (273, 810097), (321, 688961), (339, 652379), (469, 471549), (749, 295269), (791, 279591), (871, 253911), (1391, 158991), (1407, 157183), (1469, 150549), (2247, 98423), (2373, 93197), (2613, 84637), (4173, 52997), (4407, 50183), (6097, 36273), (7169, 30849), (7571, 29211), (9737, 22713), (10283, 21507), (12091, 18291)]