20147780

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6761}}^1$

素因数の和:6919

約数の個数: 24

約数和(自身を含む): 42600600

約数和(自身を除く): 22452820

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6761, 13522, 27044, 33805, 67610, 135220, 1007389, 2014778, 4029556, 5036945, 10073890, 20147780]

約数ペア:

[(1, 20147780), (2, 10073890), (4, 5036945), (5, 4029556), (10, 2014778), (20, 1007389), (149, 135220), (298, 67610), (596, 33805), (745, 27044), (1490, 13522), (2980, 6761)]