19090988

素因数分解:

$2^2\times 7^2\times {\mathrm{257}}^1\times {\mathrm{379}}^1$

素因数の和:654

約数の個数: 36

約数和(自身を含む): 39117960

約数和(自身を除く): 20026972

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 257, 379, 514, 758, 1028, 1516, 1799, 2653, 3598, 5306, 7196, 10612, 12593, 18571, 25186, 37142, 50372, 74284, 97403, 194806, 389612, 681821, 1363642, 2727284, 4772747, 9545494, 19090988]

約数ペア:

[(1, 19090988), (2, 9545494), (4, 4772747), (7, 2727284), (14, 1363642), (28, 681821), (49, 389612), (98, 194806), (196, 97403), (257, 74284), (379, 50372), (514, 37142), (758, 25186), (1028, 18571), (1516, 12593), (1799, 10612), (2653, 7196), (3598, 5306)]