21133365

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{487}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 37103616

約数和(自身を除く): 15970251

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 263, 487, 789, 1315, 1461, 2435, 2893, 3945, 5357, 7305, 8679, 14465, 16071, 26785, 43395, 80355, 128081, 384243, 640405, 1408891, 1921215, 4226673, 7044455, 21133365]

約数ペア:

[(1, 21133365), (3, 7044455), (5, 4226673), (11, 1921215), (15, 1408891), (33, 640405), (55, 384243), (165, 128081), (263, 80355), (487, 43395), (789, 26785), (1315, 16071), (1461, 14465), (2435, 8679), (2893, 7305), (3945, 5357)]