21355982

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1\times {\mathrm{809}}^1$

素因数の和:1075

約数の個数: 16

約数和(自身を含む): 32717520

約数和(自身を除く): 11361538

約数列:

[1, 2, 67, 134, 197, 394, 809, 1618, 13199, 26398, 54203, 108406, 159373, 318746, 10677991, 21355982]

約数ペア:

[(1, 21355982), (2, 10677991), (67, 318746), (134, 159373), (197, 108406), (394, 54203), (809, 26398), (1618, 13199)]