21964388

素因数分解:

$2^2\times {\mathrm{137}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 39123000

約数和(自身を除く): 17158612

約数列:

[1, 2, 4, 137, 149, 269, 274, 298, 538, 548, 596, 1076, 20413, 36853, 40081, 40826, 73706, 80162, 81652, 147412, 160324, 5491097, 10982194, 21964388]

約数ペア:

[(1, 21964388), (2, 10982194), (4, 5491097), (137, 160324), (149, 147412), (269, 81652), (274, 80162), (298, 73706), (538, 40826), (548, 40081), (596, 36853), (1076, 20413)]