12891505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7561}}^1$

素因数の和:7608

約数の個数: 16

約数和(自身を含む): 17422848

約数和(自身を除く): 4531343

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 7561, 37805, 83171, 234391, 415855, 1171955, 2578301, 12891505]

約数ペア:

[(1, 12891505), (5, 2578301), (11, 1171955), (31, 415855), (55, 234391), (155, 83171), (341, 37805), (1705, 7561)]