21027357

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1051}}^1$

素因数の和:1095

約数の個数: 40

約数和(自身を含む): 35641760

約数和(自身を除く): 14614403

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 81, 117, 171, 247, 351, 513, 741, 1051, 1053, 1539, 2223, 3153, 6669, 9459, 13663, 19969, 20007, 28377, 40989, 59907, 85131, 122967, 179721, 259597, 368901, 539163, 778791, 1106703, 1617489, 2336373, 7009119, 21027357]

約数ペア:

[(1, 21027357), (3, 7009119), (9, 2336373), (13, 1617489), (19, 1106703), (27, 778791), (39, 539163), (57, 368901), (81, 259597), (117, 179721), (171, 122967), (247, 85131), (351, 59907), (513, 40989), (741, 28377), (1051, 20007), (1053, 19969), (1539, 13663), (2223, 9459), (3153, 6669)]