28820036

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 63201600

約数和(自身を除く): 34381564

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 71, 76, 98, 109, 133, 142, 196, 218, 266, 284, 436, 497, 532, 763, 931, 994, 1349, 1526, 1862, 1988, 2071, 2698, 3052, 3479, 3724, 4142, 5341, 5396, 6958, 7739, 8284, 9443, 10682, 13916, 14497, 15478, 18886, 21364, 28994, 30956, 37772, 54173, 57988, 66101, 101479, 108346, 132202, 147041, 202958, 216692, 264404, 294082, 379211, 405916, 588164, 758422, 1029287, 1516844, 2058574, 4117148, 7205009, 14410018, 28820036]

約数ペア:

[(1, 28820036), (2, 14410018), (4, 7205009), (7, 4117148), (14, 2058574), (19, 1516844), (28, 1029287), (38, 758422), (49, 588164), (71, 405916), (76, 379211), (98, 294082), (109, 264404), (133, 216692), (142, 202958), (196, 147041), (218, 132202), (266, 108346), (284, 101479), (436, 66101), (497, 57988), (532, 54173), (763, 37772), (931, 30956), (994, 28994), (1349, 21364), (1526, 18886), (1862, 15478), (1988, 14497), (2071, 13916), (2698, 10682), (3052, 9443), (3479, 8284), (3724, 7739), (4142, 6958), (5341, 5396)]