28745457

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 43080576

約数和(自身を除く): 14335119

約数列:

[1, 3, 13, 39, 43, 61, 129, 183, 281, 559, 793, 843, 1677, 2379, 2623, 3653, 7869, 10959, 12083, 17141, 34099, 36249, 51423, 102297, 157079, 222833, 471237, 668499, 737063, 2211189, 9581819, 28745457]

約数ペア:

[(1, 28745457), (3, 9581819), (13, 2211189), (39, 737063), (43, 668499), (61, 471237), (129, 222833), (183, 157079), (281, 102297), (559, 51423), (793, 36249), (843, 34099), (1677, 17141), (2379, 12083), (2623, 10959), (3653, 7869)]