21173820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{359}}^1\times {\mathrm{983}}^1$

素因数の和:1354

約数の個数: 48

約数和(自身を含む): 59512320

約数和(自身を除く): 38338500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 359, 718, 983, 1077, 1436, 1795, 1966, 2154, 2949, 3590, 3932, 4308, 4915, 5385, 5898, 7180, 9830, 10770, 11796, 14745, 19660, 21540, 29490, 58980, 352897, 705794, 1058691, 1411588, 1764485, 2117382, 3528970, 4234764, 5293455, 7057940, 10586910, 21173820]

約数ペア:

[(1, 21173820), (2, 10586910), (3, 7057940), (4, 5293455), (5, 4234764), (6, 3528970), (10, 2117382), (12, 1764485), (15, 1411588), (20, 1058691), (30, 705794), (60, 352897), (359, 58980), (718, 29490), (983, 21540), (1077, 19660), (1436, 14745), (1795, 11796), (1966, 10770), (2154, 9830), (2949, 7180), (3590, 5898), (3932, 5385), (4308, 4915)]