18755548

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 38886400

約数和(自身を除く): 20130852

約数列:

[1, 2, 4, 7, 14, 28, 61, 79, 122, 139, 158, 244, 278, 316, 427, 553, 556, 854, 973, 1106, 1708, 1946, 2212, 3892, 4819, 8479, 9638, 10981, 16958, 19276, 21962, 33733, 33916, 43924, 59353, 67466, 76867, 118706, 134932, 153734, 237412, 307468, 669841, 1339682, 2679364, 4688887, 9377774, 18755548]

約数ペア:

[(1, 18755548), (2, 9377774), (4, 4688887), (7, 2679364), (14, 1339682), (28, 669841), (61, 307468), (79, 237412), (122, 153734), (139, 134932), (158, 118706), (244, 76867), (278, 67466), (316, 59353), (427, 43924), (553, 33916), (556, 33733), (854, 21962), (973, 19276), (1106, 16958), (1708, 10981), (1946, 9638), (2212, 8479), (3892, 4819)]