18414280

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{6871}}^1$

素因数の和:6949

約数の個数: 32

約数和(自身を含む): 42056640

約数和(自身を除く): 23642360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 6871, 13742, 27484, 34355, 54968, 68710, 137420, 274840, 460357, 920714, 1841428, 2301785, 3682856, 4603570, 9207140, 18414280]

約数ペア:

[(1, 18414280), (2, 9207140), (4, 4603570), (5, 3682856), (8, 2301785), (10, 1841428), (20, 920714), (40, 460357), (67, 274840), (134, 137420), (268, 68710), (335, 54968), (536, 34355), (670, 27484), (1340, 13742), (2680, 6871)]