171420921

素因数分解:

$3^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:335

約数の個数: 64

約数和(自身を含む): 300326400

約数和(自身を除く): 128905479

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 109, 157, 159, 189, 327, 371, 471, 477, 763, 981, 1099, 1113, 1413, 1431, 2289, 2943, 3297, 3339, 4239, 5777, 6867, 8321, 9891, 10017, 17113, 17331, 20601, 24963, 29673, 40439, 51339, 51993, 58247, 74889, 119791, 121317, 154017, 155979, 174741, 224667, 359373, 363951, 462051, 524223, 906989, 1078119, 1091853, 1572669, 2720967, 3234357, 6348923, 8162901, 19046769, 24488703, 57140307, 171420921]

約数ペア:

[(1, 171420921), (3, 57140307), (7, 24488703), (9, 19046769), (21, 8162901), (27, 6348923), (53, 3234357), (63, 2720967), (109, 1572669), (157, 1091853), (159, 1078119), (189, 906989), (327, 524223), (371, 462051), (471, 363951), (477, 359373), (763, 224667), (981, 174741), (1099, 155979), (1113, 154017), (1413, 121317), (1431, 119791), (2289, 74889), (2943, 58247), (3297, 51993), (3339, 51339), (4239, 40439), (5777, 29673), (6867, 24963), (8321, 20601), (9891, 17331), (10017, 17113)]