18640645

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:476

約数の個数: 16

約数和(自身を含む): 22809600

約数和(自身を除く): 4168955

約数列:

[1, 5, 131, 149, 191, 655, 745, 955, 19519, 25021, 28459, 97595, 125105, 142295, 3728129, 18640645]

約数ペア:

[(1, 18640645), (5, 3728129), (131, 142295), (149, 125105), (191, 97595), (655, 28459), (745, 25021), (955, 19519)]