18449840

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1093}}^1$

素因数の和:1317

約数の個数: 40

約数和(自身を含む): 43138608

約数和(自身を除く): 24688768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1093, 1688, 2110, 2186, 3376, 4220, 4372, 5465, 8440, 8744, 10930, 16880, 17488, 21860, 43720, 87440, 230623, 461246, 922492, 1153115, 1844984, 2306230, 3689968, 4612460, 9224920, 18449840]

約数ペア:

[(1, 18449840), (2, 9224920), (4, 4612460), (5, 3689968), (8, 2306230), (10, 1844984), (16, 1153115), (20, 922492), (40, 461246), (80, 230623), (211, 87440), (422, 43720), (844, 21860), (1055, 17488), (1093, 16880), (1688, 10930), (2110, 8744), (2186, 8440), (3376, 5465), (4220, 4372)]