20178032836

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{881}}^1\times {\mathrm{1993}}^1$

素因数の和:2921

約数の個数: 72

約数和(自身を含む): 40552289064

約数和(自身を除く): 20374256228

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 169, 221, 338, 442, 676, 881, 884, 1762, 1993, 2873, 3524, 3986, 5746, 7972, 11453, 11492, 14977, 22906, 25909, 29954, 33881, 45812, 51818, 59908, 67762, 103636, 135524, 148889, 194701, 297778, 336817, 389402, 440453, 595556, 673634, 778804, 880906, 1347268, 1755833, 1761812, 2531113, 3511666, 5062226, 5725889, 7023332, 10124452, 11451778, 22825829, 22903556, 29849161, 45651658, 59698322, 91303316, 119396644, 296735777, 388039093, 593471554, 776078186, 1186943108, 1552156372, 5044508209, 10089016418, 20178032836]

約数ペア:

[(1, 20178032836), (2, 10089016418), (4, 5044508209), (13, 1552156372), (17, 1186943108), (26, 776078186), (34, 593471554), (52, 388039093), (68, 296735777), (169, 119396644), (221, 91303316), (338, 59698322), (442, 45651658), (676, 29849161), (881, 22903556), (884, 22825829), (1762, 11451778), (1993, 10124452), (2873, 7023332), (3524, 5725889), (3986, 5062226), (5746, 3511666), (7972, 2531113), (11453, 1761812), (11492, 1755833), (14977, 1347268), (22906, 880906), (25909, 778804), (29954, 673634), (33881, 595556), (45812, 440453), (51818, 389402), (59908, 336817), (67762, 297778), (103636, 194701), (135524, 148889)]