821918721

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{421}}^1\times {\mathrm{443}}^1$

素因数の和:993

約数の個数: 32

約数和(自身を含む): 1196157312

約数和(自身を除く): 374238591

約数列:

[1, 3, 13, 39, 113, 339, 421, 443, 1263, 1329, 1469, 4407, 5473, 5759, 16419, 17277, 47573, 50059, 142719, 150177, 186503, 559509, 618449, 650767, 1855347, 1952301, 2424539, 7273617, 21074839, 63224517, 273972907, 821918721]

約数ペア:

[(1, 821918721), (3, 273972907), (13, 63224517), (39, 21074839), (113, 7273617), (339, 2424539), (421, 1952301), (443, 1855347), (1263, 650767), (1329, 618449), (1469, 559509), (4407, 186503), (5473, 150177), (5759, 142719), (16419, 50059), (17277, 47573)]