20191388

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{229}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 42040320

約数和(自身を除く): 21848932

約数列:

[1, 2, 4, 7, 14, 28, 47, 67, 94, 134, 188, 229, 268, 329, 458, 469, 658, 916, 938, 1316, 1603, 1876, 3149, 3206, 6298, 6412, 10763, 12596, 15343, 21526, 22043, 30686, 43052, 44086, 61372, 75341, 88172, 107401, 150682, 214802, 301364, 429604, 721121, 1442242, 2884484, 5047847, 10095694, 20191388]

約数ペア:

[(1, 20191388), (2, 10095694), (4, 5047847), (7, 2884484), (14, 1442242), (28, 721121), (47, 429604), (67, 301364), (94, 214802), (134, 150682), (188, 107401), (229, 88172), (268, 75341), (329, 61372), (458, 44086), (469, 43052), (658, 30686), (916, 22043), (938, 21526), (1316, 15343), (1603, 12596), (1876, 10763), (3149, 6412), (3206, 6298)]