21680028

素因数分解:

$2^2\times 3^3\times {\mathrm{191}}^1\times {\mathrm{1051}}^1$

素因数の和:1255

約数の個数: 48

約数和(自身を含む): 56555520

約数和(自身を除く): 34875492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 191, 382, 573, 764, 1051, 1146, 1719, 2102, 2292, 3153, 3438, 4204, 5157, 6306, 6876, 9459, 10314, 12612, 18918, 20628, 28377, 37836, 56754, 113508, 200741, 401482, 602223, 802964, 1204446, 1806669, 2408892, 3613338, 5420007, 7226676, 10840014, 21680028]

約数ペア:

[(1, 21680028), (2, 10840014), (3, 7226676), (4, 5420007), (6, 3613338), (9, 2408892), (12, 1806669), (18, 1204446), (27, 802964), (36, 602223), (54, 401482), (108, 200741), (191, 113508), (382, 56754), (573, 37836), (764, 28377), (1051, 20628), (1146, 18918), (1719, 12612), (2102, 10314), (2292, 9459), (3153, 6876), (3438, 6306), (4204, 5157)]