21643376

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{15199}}^1$

素因数の和:15296

約数の個数: 20

約数和(自身を含む): 42408000

約数和(自身を除く): 20764624

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 15199, 30398, 60796, 121592, 243184, 1352711, 2705422, 5410844, 10821688, 21643376]

約数ペア:

[(1, 21643376), (2, 10821688), (4, 5410844), (8, 2705422), (16, 1352711), (89, 243184), (178, 121592), (356, 60796), (712, 30398), (1424, 15199)]