18878161731

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{78721}}^1$

素因数の和:78804

約数の個数: 48

約数和(自身を含む): 30425738112

約数和(自身を除く): 11547576381

約数列:

[1, 3, 11, 13, 33, 39, 43, 129, 143, 169, 429, 473, 507, 559, 1419, 1677, 1859, 5577, 6149, 7267, 18447, 21801, 78721, 79937, 236163, 239811, 865931, 1023373, 2597793, 3070119, 3385003, 10155009, 11257103, 13303849, 33771309, 37235033, 39911547, 44005039, 111705099, 132015117, 146342339, 439027017, 484055429, 572065507, 1452166287, 1716196521, 6292720577, 18878161731]

約数ペア:

[(1, 18878161731), (3, 6292720577), (11, 1716196521), (13, 1452166287), (33, 572065507), (39, 484055429), (43, 439027017), (129, 146342339), (143, 132015117), (169, 111705099), (429, 44005039), (473, 39911547), (507, 37235033), (559, 33771309), (1419, 13303849), (1677, 11257103), (1859, 10155009), (5577, 3385003), (6149, 3070119), (7267, 2597793), (18447, 1023373), (21801, 865931), (78721, 239811), (79937, 236163)]