1781112820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4687139}}^1$

素因数の和:4687167

約数の個数: 24

約数和(自身を含む): 3937197600

約数和(自身を除く): 2156084780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 4687139, 9374278, 18748556, 23435695, 46871390, 89055641, 93742780, 178111282, 356222564, 445278205, 890556410, 1781112820]

約数ペア:

[(1, 1781112820), (2, 890556410), (4, 445278205), (5, 356222564), (10, 178111282), (19, 93742780), (20, 89055641), (38, 46871390), (76, 23435695), (95, 18748556), (190, 9374278), (380, 4687139)]