21691314

素因数分解:

$2^1\times 3^4\times {\mathrm{257}}^1\times {\mathrm{521}}^1$

素因数の和:792

約数の個数: 40

約数和(自身を含む): 48887388

約数和(自身を除く): 27196074

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 257, 514, 521, 771, 1042, 1542, 1563, 2313, 3126, 4626, 4689, 6939, 9378, 13878, 14067, 20817, 28134, 41634, 42201, 84402, 133897, 267794, 401691, 803382, 1205073, 2410146, 3615219, 7230438, 10845657, 21691314]

約数ペア:

[(1, 21691314), (2, 10845657), (3, 7230438), (6, 3615219), (9, 2410146), (18, 1205073), (27, 803382), (54, 401691), (81, 267794), (162, 133897), (257, 84402), (514, 42201), (521, 41634), (771, 28134), (1042, 20817), (1542, 14067), (1563, 13878), (2313, 9378), (3126, 6939), (4626, 4689)]