19902002

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{6577}}^1$

素因数の和:6685

約数の個数: 16

約数和(自身を含む): 31969080

約数和(自身を除く): 12067078

約数列:

[1, 2, 17, 34, 89, 178, 1513, 3026, 6577, 13154, 111809, 223618, 585353, 1170706, 9951001, 19902002]

約数ペア:

[(1, 19902002), (2, 9951001), (17, 1170706), (34, 585353), (89, 223618), (178, 111809), (1513, 13154), (3026, 6577)]