20645581

素因数分解:

${\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:444

約数の個数: 16

約数和(自身を含む): 23158080

約数和(自身を除く): 2512499

約数列:

[1, 11, 67, 109, 257, 737, 1199, 2827, 7303, 17219, 28013, 80333, 189409, 308143, 1876871, 20645581]

約数ペア:

[(1, 20645581), (11, 1876871), (67, 308143), (109, 189409), (257, 80333), (737, 28013), (1199, 17219), (2827, 7303)]