21653896

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{2389}}^1$

素因数の和:2509

約数の個数: 32

約数和(自身を含む): 44740800

約数和(自身を除く): 23086904

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 103, 206, 412, 824, 1133, 2266, 2389, 4532, 4778, 9064, 9556, 19112, 26279, 52558, 105116, 210232, 246067, 492134, 984268, 1968536, 2706737, 5413474, 10826948, 21653896]

約数ペア:

[(1, 21653896), (2, 10826948), (4, 5413474), (8, 2706737), (11, 1968536), (22, 984268), (44, 492134), (88, 246067), (103, 210232), (206, 105116), (412, 52558), (824, 26279), (1133, 19112), (2266, 9556), (2389, 9064), (4532, 4778)]