21985648

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{20509}}^1$

素因数の和:20584

約数の個数: 20

約数和(自身を含む): 43235080

約数和(自身を除く): 21249432

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 20509, 41018, 82036, 164072, 328144, 1374103, 2748206, 5496412, 10992824, 21985648]

約数ペア:

[(1, 21985648), (2, 10992824), (4, 5496412), (8, 2748206), (16, 1374103), (67, 328144), (134, 164072), (268, 82036), (536, 41018), (1072, 20509)]