20657835

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4637}}^1$

素因数の和:4665

約数の個数: 40

約数和(自身を含む): 40406256

約数和(自身を除く): 19748421

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 297, 405, 495, 891, 1485, 4455, 4637, 13911, 23185, 41733, 51007, 69555, 125199, 153021, 208665, 255035, 375597, 459063, 625995, 765105, 1377189, 1877985, 2295315, 4131567, 6885945, 20657835]

約数ペア:

[(1, 20657835), (3, 6885945), (5, 4131567), (9, 2295315), (11, 1877985), (15, 1377189), (27, 765105), (33, 625995), (45, 459063), (55, 375597), (81, 255035), (99, 208665), (135, 153021), (165, 125199), (297, 69555), (405, 51007), (495, 41733), (891, 23185), (1485, 13911), (4455, 4637)]