12781791

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 21385728

約数和(自身を除く): 8603937

約数列:

[1, 3, 9, 11, 33, 41, 47, 67, 99, 123, 141, 201, 369, 423, 451, 517, 603, 737, 1353, 1551, 1927, 2211, 2747, 3149, 4059, 4653, 5781, 6633, 8241, 9447, 17343, 21197, 24723, 28341, 30217, 34639, 63591, 90651, 103917, 129109, 190773, 271953, 311751, 387327, 1161981, 1420199, 4260597, 12781791]

約数ペア:

[(1, 12781791), (3, 4260597), (9, 1420199), (11, 1161981), (33, 387327), (41, 311751), (47, 271953), (67, 190773), (99, 129109), (123, 103917), (141, 90651), (201, 63591), (369, 34639), (423, 30217), (451, 28341), (517, 24723), (603, 21197), (737, 17343), (1353, 9447), (1551, 8241), (1927, 6633), (2211, 5781), (2747, 4653), (3149, 4059)]