209894517

素因数分解:

$3^3\times 7^1\times {\mathrm{97}}^1\times {\mathrm{107}}^2$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 362427520

約数和(自身を除く): 152533003

約数列:

[1, 3, 7, 9, 21, 27, 63, 97, 107, 189, 291, 321, 679, 749, 873, 963, 2037, 2247, 2619, 2889, 6111, 6741, 10379, 11449, 18333, 20223, 31137, 34347, 72653, 80143, 93411, 103041, 217959, 240429, 280233, 309123, 653877, 721287, 1110553, 1961631, 2163861, 3331659, 7773871, 9994977, 23321613, 29984931, 69964839, 209894517]

約数ペア:

[(1, 209894517), (3, 69964839), (7, 29984931), (9, 23321613), (21, 9994977), (27, 7773871), (63, 3331659), (97, 2163861), (107, 1961631), (189, 1110553), (291, 721287), (321, 653877), (679, 309123), (749, 280233), (873, 240429), (963, 217959), (2037, 103041), (2247, 93411), (2619, 80143), (2889, 72653), (6111, 34347), (6741, 31137), (10379, 20223), (11449, 18333)]