21818727

素因数分解:

$3^5\times 7^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 38019072

約数和(自身を除く): 16200345

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 101, 127, 189, 243, 303, 381, 567, 707, 889, 909, 1143, 1701, 2121, 2667, 2727, 3429, 6363, 8001, 8181, 10287, 12827, 19089, 24003, 24543, 30861, 38481, 57267, 72009, 89789, 115443, 171801, 216027, 269367, 346329, 808101, 1038987, 2424303, 3116961, 7272909, 21818727]

約数ペア:

[(1, 21818727), (3, 7272909), (7, 3116961), (9, 2424303), (21, 1038987), (27, 808101), (63, 346329), (81, 269367), (101, 216027), (127, 171801), (189, 115443), (243, 89789), (303, 72009), (381, 57267), (567, 38481), (707, 30861), (889, 24543), (909, 24003), (1143, 19089), (1701, 12827), (2121, 10287), (2667, 8181), (2727, 8001), (3429, 6363)]