21528117

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4973}}^1$

素因数の和:5029

約数の個数: 24

約数和(自身を含む): 34400184

約数和(自身を除く): 12872067

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 333, 481, 1443, 4329, 4973, 14919, 44757, 64649, 184001, 193947, 552003, 581841, 1656009, 2392013, 7176039, 21528117]

約数ペア:

[(1, 21528117), (3, 7176039), (9, 2392013), (13, 1656009), (37, 581841), (39, 552003), (111, 193947), (117, 184001), (333, 64649), (481, 44757), (1443, 14919), (4329, 4973)]