21032920

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2753}}^1$

素因数の和:2955

約数の個数: 32

約数和(自身を含む): 47589120

約数和(自身を除く): 26556200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2753, 3820, 5506, 7640, 11012, 13765, 22024, 27530, 55060, 110120, 525823, 1051646, 2103292, 2629115, 4206584, 5258230, 10516460, 21032920]

約数ペア:

[(1, 21032920), (2, 10516460), (4, 5258230), (5, 4206584), (8, 2629115), (10, 2103292), (20, 1051646), (40, 525823), (191, 110120), (382, 55060), (764, 27530), (955, 22024), (1528, 13765), (1910, 11012), (2753, 7640), (3820, 5506)]