21921273

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 14769927

約数列:

[1, 3, 9, 11, 27, 33, 59, 81, 99, 139, 177, 243, 297, 417, 531, 649, 891, 1251, 1529, 1593, 1947, 2673, 3753, 4587, 4779, 5841, 8201, 11259, 13761, 14337, 17523, 24603, 33777, 41283, 52569, 73809, 90211, 123849, 157707, 221427, 270633, 371547, 664281, 811899, 1992843, 2435697, 7307091, 21921273]

約数ペア:

[(1, 21921273), (3, 7307091), (9, 2435697), (11, 1992843), (27, 811899), (33, 664281), (59, 371547), (81, 270633), (99, 221427), (139, 157707), (177, 123849), (243, 90211), (297, 73809), (417, 52569), (531, 41283), (649, 33777), (891, 24603), (1251, 17523), (1529, 14337), (1593, 13761), (1947, 11259), (2673, 8201), (3753, 5841), (4587, 4779)]