18711994

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{21911}}^1$

素因数の和:21981

約数の個数: 16

約数和(自身を含む): 32605056

約数和(自身を除く): 13893062

約数列:

[1, 2, 7, 14, 61, 122, 427, 854, 21911, 43822, 153377, 306754, 1336571, 2673142, 9355997, 18711994]

約数ペア:

[(1, 18711994), (2, 9355997), (7, 2673142), (14, 1336571), (61, 306754), (122, 153377), (427, 43822), (854, 21911)]