18995746

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 38486016

約数和(自身を除く): 19490270

約数列:

[1, 2, 7, 11, 14, 22, 23, 31, 46, 62, 77, 154, 161, 173, 217, 253, 322, 341, 346, 434, 506, 682, 713, 1211, 1426, 1771, 1903, 2387, 2422, 3542, 3806, 3979, 4774, 4991, 5363, 7843, 7958, 9982, 10726, 13321, 15686, 26642, 27853, 37541, 43769, 54901, 55706, 58993, 75082, 87538, 109802, 117986, 123349, 246698, 306383, 412951, 612766, 825902, 863443, 1356839, 1726886, 2713678, 9497873, 18995746]

約数ペア:

[(1, 18995746), (2, 9497873), (7, 2713678), (11, 1726886), (14, 1356839), (22, 863443), (23, 825902), (31, 612766), (46, 412951), (62, 306383), (77, 246698), (154, 123349), (161, 117986), (173, 109802), (217, 87538), (253, 75082), (322, 58993), (341, 55706), (346, 54901), (434, 43769), (506, 37541), (682, 27853), (713, 26642), (1211, 15686), (1426, 13321), (1771, 10726), (1903, 9982), (2387, 7958), (2422, 7843), (3542, 5363), (3806, 4991), (3979, 4774)]