1991238067

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{21101}}^1$

素因数の和:21199

約数の個数: 32

約数和(自身を含む): 2637581184

約数和(自身を除く): 646343117

約数列:

[1, 7, 13, 17, 61, 91, 119, 221, 427, 793, 1037, 1547, 5551, 7259, 13481, 21101, 94367, 147707, 274313, 358717, 1287161, 1920191, 2511019, 4663321, 9010127, 16733093, 21881737, 32643247, 117131651, 153172159, 284462581, 1991238067]

約数ペア:

[(1, 1991238067), (7, 284462581), (13, 153172159), (17, 117131651), (61, 32643247), (91, 21881737), (119, 16733093), (221, 9010127), (427, 4663321), (793, 2511019), (1037, 1920191), (1547, 1287161), (5551, 358717), (7259, 274313), (13481, 147707), (21101, 94367)]