18960968

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{541}}^1$

素因数の和:897

約数の個数: 32

約数和(自身を含む): 38471160

約数和(自身を除く): 19510192

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 337, 541, 674, 1082, 1348, 2164, 2696, 4328, 4381, 7033, 8762, 14066, 17524, 28132, 35048, 56264, 182317, 364634, 729268, 1458536, 2370121, 4740242, 9480484, 18960968]

約数ペア:

[(1, 18960968), (2, 9480484), (4, 4740242), (8, 2370121), (13, 1458536), (26, 729268), (52, 364634), (104, 182317), (337, 56264), (541, 35048), (674, 28132), (1082, 17524), (1348, 14066), (2164, 8762), (2696, 7033), (4328, 4381)]