20164221

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:144

約数の個数: 80

約数和(自身を含む): 38890368

約数和(自身を除く): 18726147

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 53, 61, 63, 77, 81, 99, 159, 183, 189, 231, 297, 371, 427, 477, 549, 567, 583, 671, 693, 891, 1113, 1281, 1431, 1647, 1749, 2013, 2079, 3233, 3339, 3843, 4081, 4293, 4697, 4941, 5247, 6039, 6237, 9699, 10017, 11529, 12243, 14091, 15741, 18117, 22631, 29097, 30051, 34587, 35563, 36729, 42273, 47223, 54351, 67893, 87291, 106689, 110187, 126819, 203679, 248941, 261873, 320067, 330561, 380457, 611037, 746823, 960201, 1833111, 2240469, 2880603, 6721407, 20164221]

約数ペア:

[(1, 20164221), (3, 6721407), (7, 2880603), (9, 2240469), (11, 1833111), (21, 960201), (27, 746823), (33, 611037), (53, 380457), (61, 330561), (63, 320067), (77, 261873), (81, 248941), (99, 203679), (159, 126819), (183, 110187), (189, 106689), (231, 87291), (297, 67893), (371, 54351), (427, 47223), (477, 42273), (549, 36729), (567, 35563), (583, 34587), (671, 30051), (693, 29097), (891, 22631), (1113, 18117), (1281, 15741), (1431, 14091), (1647, 12243), (1749, 11529), (2013, 10017), (2079, 9699), (3233, 6237), (3339, 6039), (3843, 5247), (4081, 4941), (4293, 4697)]