28580391

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 51266560

約数和(自身を除く): 22686169

約数列:

[1, 3, 7, 9, 21, 27, 37, 61, 63, 67, 111, 183, 189, 201, 259, 333, 427, 469, 549, 603, 777, 999, 1281, 1407, 1647, 1809, 2257, 2331, 2479, 3843, 4087, 4221, 6771, 6993, 7437, 11529, 12261, 12663, 15799, 17353, 20313, 22311, 28609, 36783, 47397, 52059, 60939, 66933, 85827, 110349, 142191, 151219, 156177, 257481, 426573, 453657, 468531, 772443, 1058533, 1360971, 3175599, 4082913, 9526797, 28580391]

約数ペア:

[(1, 28580391), (3, 9526797), (7, 4082913), (9, 3175599), (21, 1360971), (27, 1058533), (37, 772443), (61, 468531), (63, 453657), (67, 426573), (111, 257481), (183, 156177), (189, 151219), (201, 142191), (259, 110349), (333, 85827), (427, 66933), (469, 60939), (549, 52059), (603, 47397), (777, 36783), (999, 28609), (1281, 22311), (1407, 20313), (1647, 17353), (1809, 15799), (2257, 12663), (2331, 12261), (2479, 11529), (3843, 7437), (4087, 6993), (4221, 6771)]