19089917

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 6069763

約数列:

[1, 7, 11, 29, 77, 83, 103, 203, 319, 581, 721, 913, 1133, 2233, 2407, 2987, 6391, 7931, 8549, 16849, 20909, 26477, 32857, 59843, 94039, 185339, 229999, 247921, 658273, 1735447, 2727131, 19089917]

約数ペア:

[(1, 19089917), (7, 2727131), (11, 1735447), (29, 658273), (77, 247921), (83, 229999), (103, 185339), (203, 94039), (319, 59843), (581, 32857), (721, 26477), (913, 20909), (1133, 16849), (2233, 8549), (2407, 7931), (2987, 6391)]