20178184

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 43953840

約数和(自身を除く): 23775656

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 101, 104, 113, 136, 202, 221, 226, 404, 442, 452, 808, 884, 904, 1313, 1469, 1717, 1768, 1921, 2626, 2938, 3434, 3842, 5252, 5876, 6868, 7684, 10504, 11413, 11752, 13736, 15368, 22321, 22826, 24973, 44642, 45652, 49946, 89284, 91304, 99892, 148369, 178568, 194021, 199784, 296738, 388042, 593476, 776084, 1186952, 1552168, 2522273, 5044546, 10089092, 20178184]

約数ペア:

[(1, 20178184), (2, 10089092), (4, 5044546), (8, 2522273), (13, 1552168), (17, 1186952), (26, 776084), (34, 593476), (52, 388042), (68, 296738), (101, 199784), (104, 194021), (113, 178568), (136, 148369), (202, 99892), (221, 91304), (226, 89284), (404, 49946), (442, 45652), (452, 44642), (808, 24973), (884, 22826), (904, 22321), (1313, 15368), (1469, 13736), (1717, 11752), (1768, 11413), (1921, 10504), (2626, 7684), (2938, 6868), (3434, 5876), (3842, 5252)]