389987854

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{128879}}^1$

素因数の和:128987

約数の個数: 16

約数和(自身を含む): 626356800

約数和(自身を除く): 236368946

約数列:

[1, 2, 17, 34, 89, 178, 1513, 3026, 128879, 257758, 2190943, 4381886, 11470231, 22940462, 194993927, 389987854]

約数ペア:

[(1, 389987854), (2, 194993927), (17, 22940462), (34, 11470231), (89, 4381886), (178, 2190943), (1513, 257758), (3026, 128879)]