21799071

素因数分解:

$3^3\times 7^2\times {\mathrm{16477}}^1$

素因数の和:16500

約数の個数: 24

約数和(自身を含む): 37569840

約数和(自身を除く): 15770769

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 16477, 49431, 115339, 148293, 346017, 444879, 807373, 1038051, 2422119, 3114153, 7266357, 21799071]

約数ペア:

[(1, 21799071), (3, 7266357), (7, 3114153), (9, 2422119), (21, 1038051), (27, 807373), (49, 444879), (63, 346017), (147, 148293), (189, 115339), (441, 49431), (1323, 16477)]