18000904

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{271}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 37307520

約数和(自身を除く): 19306616

約数列:

[1, 2, 4, 8, 19, 23, 38, 46, 76, 92, 152, 184, 271, 361, 437, 542, 722, 874, 1084, 1444, 1748, 2168, 2888, 3496, 5149, 6233, 8303, 10298, 12466, 16606, 20596, 24932, 33212, 41192, 49864, 66424, 97831, 118427, 195662, 236854, 391324, 473708, 782648, 947416, 2250113, 4500226, 9000452, 18000904]

約数ペア:

[(1, 18000904), (2, 9000452), (4, 4500226), (8, 2250113), (19, 947416), (23, 782648), (38, 473708), (46, 391324), (76, 236854), (92, 195662), (152, 118427), (184, 97831), (271, 66424), (361, 49864), (437, 41192), (542, 33212), (722, 24932), (874, 20596), (1084, 16606), (1444, 12466), (1748, 10298), (2168, 8303), (2888, 6233), (3496, 5149)]