20892729

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1571}}^1$

素因数の和:1629

約数の個数: 32

約数和(自身を含む): 33804288

約数和(自身を除く): 12911559

約数列:

[1, 3, 11, 13, 31, 33, 39, 93, 143, 341, 403, 429, 1023, 1209, 1571, 4433, 4713, 13299, 17281, 20423, 48701, 51843, 61269, 146103, 224653, 535711, 633113, 673959, 1607133, 1899339, 6964243, 20892729]

約数ペア:

[(1, 20892729), (3, 6964243), (11, 1899339), (13, 1607133), (31, 673959), (33, 633113), (39, 535711), (93, 224653), (143, 146103), (341, 61269), (403, 51843), (429, 48701), (1023, 20423), (1209, 17281), (1571, 13299), (4433, 4713)]