2808898561

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1\times {\mathrm{643}}^1$

素因数の和:1213

約数の個数: 32

約数和(自身を含む): 3406749696

約数和(自身を除く): 597851135

約数列:

[1, 7, 31, 41, 217, 287, 491, 643, 1271, 3437, 4501, 8897, 15221, 19933, 20131, 26363, 106547, 139531, 140917, 184541, 315713, 624061, 817253, 2209991, 4368427, 5720771, 9787103, 12944233, 68509721, 90609631, 401271223, 2808898561]

約数ペア:

[(1, 2808898561), (7, 401271223), (31, 90609631), (41, 68509721), (217, 12944233), (287, 9787103), (491, 5720771), (643, 4368427), (1271, 2209991), (3437, 817253), (4501, 624061), (8897, 315713), (15221, 184541), (19933, 140917), (20131, 139531), (26363, 106547)]