21000339381

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1693}}^1\times {\mathrm{4651}}^1$

素因数の和:6481

約数の個数: 32

約数和(自身を含む): 32278478848

約数和(自身を除く): 11278139467

約数列:

[1, 3, 7, 21, 127, 381, 889, 1693, 2667, 4651, 5079, 11851, 13953, 32557, 35553, 97671, 215011, 590677, 645033, 1505077, 1772031, 4134739, 4515231, 7874143, 12404217, 23622429, 55119001, 165357003, 1000016161, 3000048483, 7000113127, 21000339381]

約数ペア:

[(1, 21000339381), (3, 7000113127), (7, 3000048483), (21, 1000016161), (127, 165357003), (381, 55119001), (889, 23622429), (1693, 12404217), (2667, 7874143), (4651, 4515231), (5079, 4134739), (11851, 1772031), (13953, 1505077), (32557, 645033), (35553, 590677), (97671, 215011)]