21477915

素因数分解:

$3^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1063}}^1$

素因数の和:1523

約数の個数: 24

約数和(自身を含む): 37346400

約数和(自身を除く): 15868485

約数列:

[1, 3, 5, 9, 15, 45, 449, 1063, 1347, 2245, 3189, 4041, 5315, 6735, 9567, 15945, 20205, 47835, 477287, 1431861, 2386435, 4295583, 7159305, 21477915]

約数ペア:

[(1, 21477915), (3, 7159305), (5, 4295583), (9, 2386435), (15, 1431861), (45, 477287), (449, 47835), (1063, 20205), (1347, 15945), (2245, 9567), (3189, 6735), (4041, 5315)]