21921136

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{72109}}^1$

素因数の和:72136

約数の個数: 20

約数和(自身を含む): 44708200

約数和(自身を除く): 22787064

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 72109, 144218, 288436, 576872, 1153744, 1370071, 2740142, 5480284, 10960568, 21921136]

約数ペア:

[(1, 21921136), (2, 10960568), (4, 5480284), (8, 2740142), (16, 1370071), (19, 1153744), (38, 576872), (76, 288436), (152, 144218), (304, 72109)]