291217927

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 420577920

約数和(自身を除く): 129359993

約数列:

[1, 7, 11, 13, 23, 49, 77, 91, 139, 143, 161, 169, 253, 299, 539, 637, 973, 1001, 1127, 1183, 1529, 1771, 1807, 1859, 2093, 3197, 3289, 3887, 6811, 7007, 8281, 10703, 12397, 12649, 13013, 14651, 19877, 22379, 23023, 23491, 27209, 35167, 41561, 42757, 74921, 88543, 91091, 139139, 156653, 161161, 164437, 190463, 246169, 258401, 290927, 299299, 457171, 540293, 973973, 1151059, 1723183, 1808807, 2036489, 2095093, 3200197, 3782051, 5943223, 12661649, 22401379, 26474357, 41602561, 291217927]

約数ペア:

[(1, 291217927), (7, 41602561), (11, 26474357), (13, 22401379), (23, 12661649), (49, 5943223), (77, 3782051), (91, 3200197), (139, 2095093), (143, 2036489), (161, 1808807), (169, 1723183), (253, 1151059), (299, 973973), (539, 540293), (637, 457171), (973, 299299), (1001, 290927), (1127, 258401), (1183, 246169), (1529, 190463), (1771, 164437), (1807, 161161), (1859, 156653), (2093, 139139), (3197, 91091), (3289, 88543), (3887, 74921), (6811, 42757), (7007, 41561), (8281, 35167), (10703, 27209), (12397, 23491), (12649, 23023), (13013, 22379), (14651, 19877)]