31488261

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{523}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 49901568

約数和(自身を除く): 18413307

約数列:

[1, 3, 7, 21, 47, 61, 141, 183, 329, 427, 523, 987, 1281, 1569, 2867, 3661, 8601, 10983, 20069, 24581, 31903, 60207, 73743, 95709, 172067, 223321, 516201, 669963, 1499441, 4498323, 10496087, 31488261]

約数ペア:

[(1, 31488261), (3, 10496087), (7, 4498323), (21, 1499441), (47, 669963), (61, 516201), (141, 223321), (183, 172067), (329, 95709), (427, 73743), (523, 60207), (987, 31903), (1281, 24581), (1569, 20069), (2867, 10983), (3661, 8601)]