18970820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1627}}^1$

素因数の和:1700

約数の個数: 48

約数和(自身を含む): 44307648

約数和(自身を除く): 25336828

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1627, 2332, 2915, 3254, 5830, 6508, 8135, 11660, 16270, 17897, 32540, 35794, 71588, 86231, 89485, 172462, 178970, 344924, 357940, 431155, 862310, 948541, 1724620, 1897082, 3794164, 4742705, 9485410, 18970820]

約数ペア:

[(1, 18970820), (2, 9485410), (4, 4742705), (5, 3794164), (10, 1897082), (11, 1724620), (20, 948541), (22, 862310), (44, 431155), (53, 357940), (55, 344924), (106, 178970), (110, 172462), (212, 89485), (220, 86231), (265, 71588), (530, 35794), (583, 32540), (1060, 17897), (1166, 16270), (1627, 11660), (2332, 8135), (2915, 6508), (3254, 5830)]