278966884

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1\times {\mathrm{313}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 566204800

約数和(自身を除く): 287237916

約数列:

[1, 2, 4, 7, 14, 28, 139, 229, 278, 313, 458, 556, 626, 916, 973, 1252, 1603, 1946, 2191, 3206, 3892, 4382, 6412, 8764, 31831, 43507, 63662, 71677, 87014, 127324, 143354, 174028, 222817, 286708, 304549, 445634, 501739, 609098, 891268, 1003478, 1218196, 2006956, 9963103, 19926206, 39852412, 69741721, 139483442, 278966884]

約数ペア:

[(1, 278966884), (2, 139483442), (4, 69741721), (7, 39852412), (14, 19926206), (28, 9963103), (139, 2006956), (229, 1218196), (278, 1003478), (313, 891268), (458, 609098), (556, 501739), (626, 445634), (916, 304549), (973, 286708), (1252, 222817), (1603, 174028), (1946, 143354), (2191, 127324), (3206, 87014), (3892, 71677), (4382, 63662), (6412, 43507), (8764, 31831)]