21464575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{877}}^1$

素因数の和:987

約数の個数: 24

約数和(自身を含む): 29395440

約数和(自身を除く): 7930865

約数列:

[1, 5, 11, 25, 55, 89, 275, 445, 877, 979, 2225, 4385, 4895, 9647, 21925, 24475, 48235, 78053, 241175, 390265, 858583, 1951325, 4292915, 21464575]

約数ペア:

[(1, 21464575), (5, 4292915), (11, 1951325), (25, 858583), (55, 390265), (89, 241175), (275, 78053), (445, 48235), (877, 24475), (979, 21925), (2225, 9647), (4385, 4895)]