21526791

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{139}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 35844480

約数和(自身を除く): 14317689

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 139, 143, 209, 247, 361, 417, 429, 627, 741, 1083, 1529, 1807, 2641, 2717, 3971, 4587, 4693, 5421, 7923, 8151, 11913, 14079, 19877, 29051, 34333, 50179, 51623, 59631, 87153, 102999, 150537, 154869, 377663, 551969, 652327, 1132989, 1655907, 1956981, 7175597, 21526791]

約数ペア:

[(1, 21526791), (3, 7175597), (11, 1956981), (13, 1655907), (19, 1132989), (33, 652327), (39, 551969), (57, 377663), (139, 154869), (143, 150537), (209, 102999), (247, 87153), (361, 59631), (417, 51623), (429, 50179), (627, 34333), (741, 29051), (1083, 19877), (1529, 14079), (1807, 11913), (2641, 8151), (2717, 7923), (3971, 5421), (4587, 4693)]