20539701

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{809}}^1$

素因数の和:866

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 17199819

約数列:

[1, 3, 7, 9, 13, 21, 31, 39, 63, 91, 93, 117, 217, 273, 279, 403, 651, 809, 819, 1209, 1953, 2427, 2821, 3627, 5663, 7281, 8463, 10517, 16989, 25079, 25389, 31551, 50967, 73619, 75237, 94653, 175553, 220857, 225711, 326027, 526659, 662571, 978081, 1579977, 2282189, 2934243, 6846567, 20539701]

約数ペア:

[(1, 20539701), (3, 6846567), (7, 2934243), (9, 2282189), (13, 1579977), (21, 978081), (31, 662571), (39, 526659), (63, 326027), (91, 225711), (93, 220857), (117, 175553), (217, 94653), (273, 75237), (279, 73619), (403, 50967), (651, 31551), (809, 25389), (819, 25079), (1209, 16989), (1953, 10517), (2427, 8463), (2821, 7281), (3627, 5663)]