18943988

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{5087}}^1$

素因数の和:5124

約数の個数: 36

約数和(自身を含む): 40602240

約数和(自身を除く): 21658252

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 532, 931, 1862, 3724, 5087, 10174, 20348, 35609, 71218, 96653, 142436, 193306, 249263, 386612, 498526, 676571, 997052, 1353142, 2706284, 4735997, 9471994, 18943988]

約数ペア:

[(1, 18943988), (2, 9471994), (4, 4735997), (7, 2706284), (14, 1353142), (19, 997052), (28, 676571), (38, 498526), (49, 386612), (76, 249263), (98, 193306), (133, 142436), (196, 96653), (266, 71218), (532, 35609), (931, 20348), (1862, 10174), (3724, 5087)]