21130964

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{8969}}^1$

素因数の和:9023

約数の個数: 24

約数和(自身を含む): 40185600

約数和(自身を除く): 19054636

約数列:

[1, 2, 4, 19, 31, 38, 62, 76, 124, 589, 1178, 2356, 8969, 17938, 35876, 170411, 278039, 340822, 556078, 681644, 1112156, 5282741, 10565482, 21130964]

約数ペア:

[(1, 21130964), (2, 10565482), (4, 5282741), (19, 1112156), (31, 681644), (38, 556078), (62, 340822), (76, 278039), (124, 170411), (589, 35876), (1178, 17938), (2356, 8969)]