21118460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1627}}^1$

素因数の和:1706

約数の個数: 48

約数和(自身を含む): 49230720

約数和(自身を除く): 28112260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 220, 236, 295, 590, 649, 1180, 1298, 1627, 2596, 3245, 3254, 6490, 6508, 8135, 12980, 16270, 17897, 32540, 35794, 71588, 89485, 95993, 178970, 191986, 357940, 383972, 479965, 959930, 1055923, 1919860, 2111846, 4223692, 5279615, 10559230, 21118460]

約数ペア:

[(1, 21118460), (2, 10559230), (4, 5279615), (5, 4223692), (10, 2111846), (11, 1919860), (20, 1055923), (22, 959930), (44, 479965), (55, 383972), (59, 357940), (110, 191986), (118, 178970), (220, 95993), (236, 89485), (295, 71588), (590, 35794), (649, 32540), (1180, 17897), (1298, 16270), (1627, 12980), (2596, 8135), (3245, 6508), (3254, 6490)]