19954376

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{613}}^1$

素因数の和:945

約数の個数: 32

約数和(自身を含む): 40487160

約数和(自身を除く): 20532784

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 313, 613, 626, 1226, 1252, 2452, 2504, 4069, 4904, 7969, 8138, 15938, 16276, 31876, 32552, 63752, 191869, 383738, 767476, 1534952, 2494297, 4988594, 9977188, 19954376]

約数ペア:

[(1, 19954376), (2, 9977188), (4, 4988594), (8, 2494297), (13, 1534952), (26, 767476), (52, 383738), (104, 191869), (313, 63752), (613, 32552), (626, 31876), (1226, 16276), (1252, 15938), (2452, 8138), (2504, 7969), (4069, 4904)]