28809040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27701}}^1$

素因数の和:27727

約数の個数: 40

約数和(自身を含む): 72136008

約数和(自身を除く): 43326968

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27701, 55402, 110804, 138505, 221608, 277010, 360113, 443216, 554020, 720226, 1108040, 1440452, 1800565, 2216080, 2880904, 3601130, 5761808, 7202260, 14404520, 28809040]

約数ペア:

[(1, 28809040), (2, 14404520), (4, 7202260), (5, 5761808), (8, 3601130), (10, 2880904), (13, 2216080), (16, 1800565), (20, 1440452), (26, 1108040), (40, 720226), (52, 554020), (65, 443216), (80, 360113), (104, 277010), (130, 221608), (208, 138505), (260, 110804), (520, 55402), (1040, 27701)]