216959614.0000000000

素因数分解:

$3^4\times 7^2\times {\mathrm{991777}}^1$

素因数の和:991803

約数の個数: 30

約数和(自身を含む): 6840292866

約数和(自身を除く): 2903929953

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 991777, 2975331, 6942439, 8925993, 20827317, 26777979, 48597073, 62481951, 80333937, 145791219, 187445853, 437373657, 562337559, 1312120971, 3936362913]

約数ペア:

[(1, 3936362913), (3, 1312120971), (7, 562337559), (9, 437373657), (21, 187445853), (27, 145791219), (49, 80333937), (63, 62481951), (81, 48597073), (147, 26777979), (189, 20827317), (441, 8925993), (567, 6942439), (1323, 2975331), (3969, 991777)]