209455780

素因数分解:

$2^2\times 5^1\times {\mathrm{1549}}^1\times {\mathrm{6761}}^1$

素因数の和:8319

約数の個数: 24

約数和(自身を含む): 440206200

約数和(自身を除く): 230750420

約数列:

[1, 2, 4, 5, 10, 20, 1549, 3098, 6196, 6761, 7745, 13522, 15490, 27044, 30980, 33805, 67610, 135220, 10472789, 20945578, 41891156, 52363945, 104727890, 209455780]

約数ペア:

[(1, 209455780), (2, 104727890), (4, 52363945), (5, 41891156), (10, 20945578), (20, 10472789), (1549, 135220), (3098, 67610), (6196, 33805), (6761, 30980), (7745, 27044), (13522, 15490)]