81338145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{40771}}^1$

素因数の和:40805

約数の個数: 32

約数和(自身を含む): 156564480

約数和(自身を除く): 75226335

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 40771, 122313, 203855, 285397, 611565, 774649, 856191, 1426985, 2323947, 3873245, 4280955, 5422543, 11619735, 16267629, 27112715, 81338145]

約数ペア:

[(1, 81338145), (3, 27112715), (5, 16267629), (7, 11619735), (15, 5422543), (19, 4280955), (21, 3873245), (35, 2323947), (57, 1426985), (95, 856191), (105, 774649), (133, 611565), (285, 285397), (399, 203855), (665, 122313), (1995, 40771)]