18169921

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 23961600

約数和(自身を除く): 5791679

約数列:

[1, 7, 11, 29, 77, 79, 103, 203, 319, 553, 721, 869, 1133, 2233, 2291, 2987, 6083, 7931, 8137, 16037, 20909, 25201, 32857, 56959, 89507, 176407, 229999, 235973, 626549, 1651811, 2595703, 18169921]

約数ペア:

[(1, 18169921), (7, 2595703), (11, 1651811), (29, 626549), (77, 235973), (79, 229999), (103, 176407), (203, 89507), (319, 56959), (553, 32857), (721, 25201), (869, 20909), (1133, 16037), (2233, 8137), (2291, 7931), (2987, 6083)]