19668340

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7507}}^1$

素因数の和:7647

約数の個数: 24

約数和(自身を含む): 41624352

約数和(自身を除く): 21956012

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7507, 15014, 30028, 37535, 75070, 150140, 983417, 1966834, 3933668, 4917085, 9834170, 19668340]

約数ペア:

[(1, 19668340), (2, 9834170), (4, 4917085), (5, 3933668), (10, 1966834), (20, 983417), (131, 150140), (262, 75070), (524, 37535), (655, 30028), (1310, 15014), (2620, 7507)]