21072887420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{786889}}^1$

素因数の和:787014

約数の個数: 48

約数和(自身を含む): 48119897280

約数和(自身を除く): 27047009860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 103, 130, 206, 260, 412, 515, 1030, 1339, 2060, 2678, 5356, 6695, 13390, 26780, 786889, 1573778, 3147556, 3934445, 7868890, 10229557, 15737780, 20459114, 40918228, 51147785, 81049567, 102295570, 162099134, 204591140, 324198268, 405247835, 810495670, 1053644371, 1620991340, 2107288742, 4214577484, 5268221855, 10536443710, 21072887420]

約数ペア:

[(1, 21072887420), (2, 10536443710), (4, 5268221855), (5, 4214577484), (10, 2107288742), (13, 1620991340), (20, 1053644371), (26, 810495670), (52, 405247835), (65, 324198268), (103, 204591140), (130, 162099134), (206, 102295570), (260, 81049567), (412, 51147785), (515, 40918228), (1030, 20459114), (1339, 15737780), (2060, 10229557), (2678, 7868890), (5356, 3934445), (6695, 3147556), (13390, 1573778), (26780, 786889)]