393497240

素因数分解:

$2^3\times 5^1\times {\mathrm{9837431}}^1$

素因数の和:9837442

約数の個数: 16

約数和(自身を含む): 885368880

約数和(自身を除く): 491871640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9837431, 19674862, 39349724, 49187155, 78699448, 98374310, 196748620, 393497240]

約数ペア:

[(1, 393497240), (2, 196748620), (4, 98374310), (5, 78699448), (8, 49187155), (10, 39349724), (20, 19674862), (40, 9837431)]