21508773

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{277}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 34000512

約数和(自身を除く): 12491739

約数列:

[1, 3, 11, 13, 33, 39, 143, 181, 277, 429, 543, 831, 1991, 2353, 3047, 3601, 5973, 7059, 9141, 10803, 25883, 39611, 50137, 77649, 118833, 150411, 551507, 651781, 1654521, 1955343, 7169591, 21508773]

約数ペア:

[(1, 21508773), (3, 7169591), (11, 1955343), (13, 1654521), (33, 651781), (39, 551507), (143, 150411), (181, 118833), (277, 77649), (429, 50137), (543, 39611), (831, 25883), (1991, 10803), (2353, 9141), (3047, 7059), (3601, 5973)]