21856149

素因数分解:

$3^6\times 7^1\times {\mathrm{4283}}^1$

素因数の和:4308

約数の個数: 28

約数和(自身を含む): 37459296

約数和(自身を除く): 15603147

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 4283, 5103, 12849, 29981, 38547, 89943, 115641, 269829, 346923, 809487, 1040769, 2428461, 3122307, 7285383, 21856149]

約数ペア:

[(1, 21856149), (3, 7285383), (7, 3122307), (9, 2428461), (21, 1040769), (27, 809487), (63, 346923), (81, 269829), (189, 115641), (243, 89943), (567, 38547), (729, 29981), (1701, 12849), (4283, 5103)]