10821980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 24766560

約数和(自身を除く): 13944580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 389, 428, 535, 778, 1070, 1391, 1556, 1945, 2140, 2782, 3890, 5057, 5564, 6955, 7780, 10114, 13910, 20228, 25285, 27820, 41623, 50570, 83246, 101140, 166492, 208115, 416230, 541099, 832460, 1082198, 2164396, 2705495, 5410990, 10821980]

約数ペア:

[(1, 10821980), (2, 5410990), (4, 2705495), (5, 2164396), (10, 1082198), (13, 832460), (20, 541099), (26, 416230), (52, 208115), (65, 166492), (107, 101140), (130, 83246), (214, 50570), (260, 41623), (389, 27820), (428, 25285), (535, 20228), (778, 13910), (1070, 10114), (1391, 7780), (1556, 6955), (1945, 5564), (2140, 5057), (2782, 3890)]