81637556

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20389}}^1$

素因数の和:20424

約数の個数: 48

約数和(自身を含む): 191829120

約数和(自身を除く): 110191564

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 20389, 40778, 81556, 142723, 224279, 265057, 285446, 448558, 530114, 570892, 897116, 1060228, 1569953, 1855399, 2915627, 3139906, 3710798, 5831254, 6279812, 7421596, 11662508, 20409389, 40818778, 81637556]

約数ペア:

[(1, 81637556), (2, 40818778), (4, 20409389), (7, 11662508), (11, 7421596), (13, 6279812), (14, 5831254), (22, 3710798), (26, 3139906), (28, 2915627), (44, 1855399), (52, 1569953), (77, 1060228), (91, 897116), (143, 570892), (154, 530114), (182, 448558), (286, 285446), (308, 265057), (364, 224279), (572, 142723), (1001, 81556), (2002, 40778), (4004, 20389)]