20880639

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 36556800

約数和(自身を除く): 15676161

約数列:

[1, 3, 9, 13, 19, 27, 31, 39, 57, 93, 101, 117, 171, 247, 279, 303, 351, 403, 513, 589, 741, 837, 909, 1209, 1313, 1767, 1919, 2223, 2727, 3131, 3627, 3939, 5301, 5757, 6669, 7657, 9393, 10881, 11817, 15903, 17271, 22971, 24947, 28179, 35451, 40703, 51813, 59489, 68913, 74841, 84537, 122109, 178467, 206739, 224523, 366327, 535401, 673569, 773357, 1098981, 1606203, 2320071, 6960213, 20880639]

約数ペア:

[(1, 20880639), (3, 6960213), (9, 2320071), (13, 1606203), (19, 1098981), (27, 773357), (31, 673569), (39, 535401), (57, 366327), (93, 224523), (101, 206739), (117, 178467), (171, 122109), (247, 84537), (279, 74841), (303, 68913), (351, 59489), (403, 51813), (513, 40703), (589, 35451), (741, 28179), (837, 24947), (909, 22971), (1209, 17271), (1313, 15903), (1767, 11817), (1919, 10881), (2223, 9393), (2727, 7657), (3131, 6669), (3627, 5757), (3939, 5301)]