639952893

素因数分解:

$3^5\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{409}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 988565760

約数和(自身を除く): 348612867

約数列:

[1, 3, 9, 27, 47, 81, 137, 141, 243, 409, 411, 423, 1227, 1233, 1269, 3681, 3699, 3807, 6439, 11043, 11097, 11421, 19223, 19317, 33129, 33291, 56033, 57669, 57951, 99387, 168099, 173007, 173853, 504297, 519021, 521559, 1512891, 1557063, 1564677, 2633551, 4538673, 4671189, 7900653, 13616019, 23701959, 71105877, 213317631, 639952893]

約数ペア:

[(1, 639952893), (3, 213317631), (9, 71105877), (27, 23701959), (47, 13616019), (81, 7900653), (137, 4671189), (141, 4538673), (243, 2633551), (409, 1564677), (411, 1557063), (423, 1512891), (1227, 521559), (1233, 519021), (1269, 504297), (3681, 173853), (3699, 173007), (3807, 168099), (6439, 99387), (11043, 57951), (11097, 57669), (11421, 56033), (19223, 33291), (19317, 33129)]