21349887

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1$

素因数の和:527

約数の個数: 32

約数和(自身を含む): 32524800

約数和(自身を除く): 11174913

約数列:

[1, 3, 13, 29, 39, 43, 87, 129, 377, 439, 559, 1131, 1247, 1317, 1677, 3741, 5707, 12731, 16211, 17121, 18877, 38193, 48633, 56631, 165503, 245401, 496509, 547433, 736203, 1642299, 7116629, 21349887]

約数ペア:

[(1, 21349887), (3, 7116629), (13, 1642299), (29, 736203), (39, 547433), (43, 496509), (87, 245401), (129, 165503), (377, 56631), (439, 48633), (559, 38193), (1131, 18877), (1247, 17121), (1317, 16211), (1677, 12731), (3741, 5707)]