21916899

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 35642880

約数和(自身を除く): 13725981

約数列:

[1, 3, 9, 19, 27, 47, 57, 81, 101, 141, 171, 243, 303, 423, 513, 893, 909, 1269, 1539, 1919, 2679, 2727, 3807, 4617, 4747, 5757, 8037, 8181, 11421, 14241, 17271, 24111, 24543, 42723, 51813, 72333, 90193, 128169, 155439, 216999, 270579, 384507, 466317, 811737, 1153521, 2435211, 7305633, 21916899]

約数ペア:

[(1, 21916899), (3, 7305633), (9, 2435211), (19, 1153521), (27, 811737), (47, 466317), (57, 384507), (81, 270579), (101, 216999), (141, 155439), (171, 128169), (243, 90193), (303, 72333), (423, 51813), (513, 42723), (893, 24543), (909, 24111), (1269, 17271), (1539, 14241), (1919, 11421), (2679, 8181), (2727, 8037), (3807, 5757), (4617, 4747)]