20688688

素因数分解:

$2^4\times {\mathrm{317}}^1\times {\mathrm{4079}}^1$

素因数の和:4404

約数の個数: 20

約数和(自身を含む): 40220640

約数和(自身を除く): 19531952

約数列:

[1, 2, 4, 8, 16, 317, 634, 1268, 2536, 4079, 5072, 8158, 16316, 32632, 65264, 1293043, 2586086, 5172172, 10344344, 20688688]

約数ペア:

[(1, 20688688), (2, 10344344), (4, 5172172), (8, 2586086), (16, 1293043), (317, 65264), (634, 32632), (1268, 16316), (2536, 8158), (4079, 5072)]