21267441

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1063}}^1$

素因数の和:1107

約数の個数: 40

約数和(自身を含む): 36048320

約数和(自身を除く): 14780879

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 81, 117, 171, 247, 351, 513, 741, 1053, 1063, 1539, 2223, 3189, 6669, 9567, 13819, 20007, 20197, 28701, 41457, 60591, 86103, 124371, 181773, 262561, 373113, 545319, 787683, 1119339, 1635957, 2363049, 7089147, 21267441]

約数ペア:

[(1, 21267441), (3, 7089147), (9, 2363049), (13, 1635957), (19, 1119339), (27, 787683), (39, 545319), (57, 373113), (81, 262561), (117, 181773), (171, 124371), (247, 86103), (351, 60591), (513, 41457), (741, 28701), (1053, 20197), (1063, 20007), (1539, 13819), (2223, 9567), (3189, 6669)]