20553735

素因数分解:

$3^1\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1669}}^1$

素因数の和:2498

約数の個数: 16

約数和(自身を含む): 32945760

約数和(自身を除く): 12392025

約数列:

[1, 3, 5, 15, 821, 1669, 2463, 4105, 5007, 8345, 12315, 25035, 1370249, 4110747, 6851245, 20553735]

約数ペア:

[(1, 20553735), (3, 6851245), (5, 4110747), (15, 1370249), (821, 25035), (1669, 12315), (2463, 8345), (4105, 5007)]