21066801

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1427}}^1$

素因数の和:1493

約数の個数: 32

約数和(自身を含む): 34728960

約数和(自身を除く): 13662159

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1427, 2109, 4281, 4921, 9989, 14763, 27113, 29967, 52799, 81339, 158397, 189791, 369593, 569373, 1003181, 1108779, 3009543, 7022267, 21066801]

約数ペア:

[(1, 21066801), (3, 7022267), (7, 3009543), (19, 1108779), (21, 1003181), (37, 569373), (57, 369593), (111, 189791), (133, 158397), (259, 81339), (399, 52799), (703, 29967), (777, 27113), (1427, 14763), (2109, 9989), (4281, 4921)]