201989991

素因数分解:

$3^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{38321}}^1$

素因数の和:38582

約数の個数: 16

約数和(自身を含む): 309028608

約数和(自身を除く): 107038617

約数列:

[1, 3, 7, 21, 251, 753, 1757, 5271, 38321, 114963, 268247, 804741, 9618571, 28855713, 67329997, 201989991]

約数ペア:

[(1, 201989991), (3, 67329997), (7, 28855713), (21, 9618571), (251, 804741), (753, 268247), (1757, 114963), (5271, 38321)]