20704761

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{433}}^1$

素因数の和:483

約数の個数: 64

約数和(自身を含む): 39997440

約数和(自身を除く): 19292679

約数列:

[1, 3, 7, 9, 11, 21, 23, 27, 33, 63, 69, 77, 99, 161, 189, 207, 231, 253, 297, 433, 483, 621, 693, 759, 1299, 1449, 1771, 2079, 2277, 3031, 3897, 4347, 4763, 5313, 6831, 9093, 9959, 11691, 14289, 15939, 27279, 29877, 33341, 42867, 47817, 69713, 81837, 89631, 100023, 109549, 128601, 209139, 268893, 300069, 328647, 627417, 766843, 900207, 985941, 1882251, 2300529, 2957823, 6901587, 20704761]

約数ペア:

[(1, 20704761), (3, 6901587), (7, 2957823), (9, 2300529), (11, 1882251), (21, 985941), (23, 900207), (27, 766843), (33, 627417), (63, 328647), (69, 300069), (77, 268893), (99, 209139), (161, 128601), (189, 109549), (207, 100023), (231, 89631), (253, 81837), (297, 69713), (433, 47817), (483, 42867), (621, 33341), (693, 29877), (759, 27279), (1299, 15939), (1449, 14289), (1771, 11691), (2079, 9959), (2277, 9093), (3031, 6831), (3897, 5313), (4347, 4763)]