21220485

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{761}}^1$

素因数の和:806

約数の個数: 48

約数和(自身を含む): 40160448

約数和(自身を除く): 18939963

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 169, 195, 429, 507, 715, 761, 845, 1859, 2145, 2283, 2535, 3805, 5577, 8371, 9295, 9893, 11415, 25113, 27885, 29679, 41855, 49465, 108823, 125565, 128609, 148395, 326469, 385827, 544115, 643045, 1414699, 1632345, 1929135, 4244097, 7073495, 21220485]

約数ペア:

[(1, 21220485), (3, 7073495), (5, 4244097), (11, 1929135), (13, 1632345), (15, 1414699), (33, 643045), (39, 544115), (55, 385827), (65, 326469), (143, 148395), (165, 128609), (169, 125565), (195, 108823), (429, 49465), (507, 41855), (715, 29679), (761, 27885), (845, 25113), (1859, 11415), (2145, 9893), (2283, 9295), (2535, 8371), (3805, 5577)]