2019194620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{8161}}^1$

素因数の和:8398

約数の個数: 48

約数和(自身を含む): 4319330400

約数和(自身を除く): 2300135780

約数列:

[1, 2, 4, 5, 10, 20, 89, 139, 178, 278, 356, 445, 556, 695, 890, 1390, 1780, 2780, 8161, 12371, 16322, 24742, 32644, 40805, 49484, 61855, 81610, 123710, 163220, 247420, 726329, 1134379, 1452658, 2268758, 2905316, 3631645, 4537516, 5671895, 7263290, 11343790, 14526580, 22687580, 100959731, 201919462, 403838924, 504798655, 1009597310, 2019194620]

約数ペア:

[(1, 2019194620), (2, 1009597310), (4, 504798655), (5, 403838924), (10, 201919462), (20, 100959731), (89, 22687580), (139, 14526580), (178, 11343790), (278, 7263290), (356, 5671895), (445, 4537516), (556, 3631645), (695, 2905316), (890, 2268758), (1390, 1452658), (1780, 1134379), (2780, 726329), (8161, 247420), (12371, 163220), (16322, 123710), (24742, 81610), (32644, 61855), (40805, 49484)]