20949891

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1\times {\mathrm{449}}^1$

素因数の和:706

約数の個数: 16

約数和(自身を含む): 28454400

約数和(自身を除く): 7504509

約数列:

[1, 3, 103, 151, 309, 449, 453, 1347, 15553, 46247, 46659, 67799, 138741, 203397, 6983297, 20949891]

約数ペア:

[(1, 20949891), (3, 6983297), (103, 203397), (151, 138741), (309, 67799), (449, 46659), (453, 46247), (1347, 15553)]