21210231

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{1051}}^1$

素因数の和:1123

約数の個数: 24

約数和(自身を含む): 33428352

約数和(自身を除く): 12218121

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 961, 1051, 2883, 3153, 6727, 7357, 20181, 22071, 32581, 97743, 228067, 684201, 1010011, 3030033, 7070077, 21210231]

約数ペア:

[(1, 21210231), (3, 7070077), (7, 3030033), (21, 1010011), (31, 684201), (93, 228067), (217, 97743), (651, 32581), (961, 22071), (1051, 20181), (2883, 7357), (3153, 6727)]