21158319

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:184

約数の個数: 64

約数和(自身を含む): 37933056

約数和(自身を除く): 16774737

約数列:

[1, 3, 7, 13, 17, 21, 39, 47, 51, 91, 97, 119, 141, 221, 273, 291, 329, 357, 611, 663, 679, 799, 987, 1261, 1547, 1649, 1833, 2037, 2397, 3783, 4277, 4559, 4641, 4947, 5593, 8827, 10387, 11543, 12831, 13677, 16779, 21437, 26481, 31161, 31913, 34629, 59267, 64311, 72709, 77503, 95739, 150059, 177801, 218127, 232509, 414869, 450177, 542521, 1007539, 1244607, 1627563, 3022617, 7052773, 21158319]

約数ペア:

[(1, 21158319), (3, 7052773), (7, 3022617), (13, 1627563), (17, 1244607), (21, 1007539), (39, 542521), (47, 450177), (51, 414869), (91, 232509), (97, 218127), (119, 177801), (141, 150059), (221, 95739), (273, 77503), (291, 72709), (329, 64311), (357, 59267), (611, 34629), (663, 31913), (679, 31161), (799, 26481), (987, 21437), (1261, 16779), (1547, 13677), (1649, 12831), (1833, 11543), (2037, 10387), (2397, 8827), (3783, 5593), (4277, 4947), (4559, 4641)]