21867813

素因数分解:

$3^9\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:139

約数の個数: 40

約数和(自身を含む): 36137376

約数和(自身を除く): 14269563

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 101, 243, 297, 303, 729, 891, 909, 1111, 2187, 2673, 2727, 3333, 6561, 8019, 8181, 9999, 19683, 24057, 24543, 29997, 72171, 73629, 89991, 216513, 220887, 269973, 662661, 809919, 1987983, 2429757, 7289271, 21867813]

約数ペア:

[(1, 21867813), (3, 7289271), (9, 2429757), (11, 1987983), (27, 809919), (33, 662661), (81, 269973), (99, 220887), (101, 216513), (243, 89991), (297, 73629), (303, 72171), (729, 29997), (891, 24543), (909, 24057), (1111, 19683), (2187, 9999), (2673, 8181), (2727, 8019), (3333, 6561)]