21905968

素因数分解:

$2^4\times 7^1\times {\mathrm{317}}^1\times {\mathrm{617}}^1$

素因数の和:949

約数の個数: 40

約数和(自身を含む): 48737952

約数和(自身を除く): 26831984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 317, 617, 634, 1234, 1268, 2219, 2468, 2536, 4319, 4438, 4936, 5072, 8638, 8876, 9872, 17276, 17752, 34552, 35504, 69104, 195589, 391178, 782356, 1369123, 1564712, 2738246, 3129424, 5476492, 10952984, 21905968]

約数ペア:

[(1, 21905968), (2, 10952984), (4, 5476492), (7, 3129424), (8, 2738246), (14, 1564712), (16, 1369123), (28, 782356), (56, 391178), (112, 195589), (317, 69104), (617, 35504), (634, 34552), (1234, 17752), (1268, 17276), (2219, 9872), (2468, 8876), (2536, 8638), (4319, 5072), (4438, 4936)]