21000279807

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{232801}}^1$

素因数の和:233080

約数の個数: 32

約数和(自身を含む): 33635232960

約数和(自身を除く): 12634953153

約数列:

[1, 3, 9, 13, 27, 39, 117, 257, 351, 771, 2313, 3341, 6939, 10023, 30069, 90207, 232801, 698403, 2095209, 3026413, 6285627, 9079239, 27237717, 59829857, 81713151, 179489571, 538468713, 777788141, 1615406139, 2333364423, 7000093269, 21000279807]

約数ペア:

[(1, 21000279807), (3, 7000093269), (9, 2333364423), (13, 1615406139), (27, 777788141), (39, 538468713), (117, 179489571), (257, 81713151), (351, 59829857), (771, 27237717), (2313, 9079239), (3341, 6285627), (6939, 3026413), (10023, 2095209), (30069, 698403), (90207, 232801)]