19845903

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1621}}^1$

素因数の和:1695

約数の個数: 32

約数和(自身を含む): 33633792

約数和(自身を除く): 13787889

約数列:

[1, 3, 7, 11, 21, 33, 53, 77, 159, 231, 371, 583, 1113, 1621, 1749, 4081, 4863, 11347, 12243, 17831, 34041, 53493, 85913, 124817, 257739, 374451, 601391, 945043, 1804173, 2835129, 6615301, 19845903]

約数ペア:

[(1, 19845903), (3, 6615301), (7, 2835129), (11, 1804173), (21, 945043), (33, 601391), (53, 374451), (77, 257739), (159, 124817), (231, 85913), (371, 53493), (583, 34041), (1113, 17831), (1621, 12243), (1749, 11347), (4081, 4863)]