18739784

素因数分解:

$2^3\times 7^1\times {\mathrm{163}}^1\times {\mathrm{2053}}^1$

素因数の和:2229

約数の個数: 32

約数和(自身を含む): 40422720

約数和(自身を除く): 21682936

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 163, 326, 652, 1141, 1304, 2053, 2282, 4106, 4564, 8212, 9128, 14371, 16424, 28742, 57484, 114968, 334639, 669278, 1338556, 2342473, 2677112, 4684946, 9369892, 18739784]

約数ペア:

[(1, 18739784), (2, 9369892), (4, 4684946), (7, 2677112), (8, 2342473), (14, 1338556), (28, 669278), (56, 334639), (163, 114968), (326, 57484), (652, 28742), (1141, 16424), (1304, 14371), (2053, 9128), (2282, 8212), (4106, 4564)]