21739400

素因数分解:

$2^3\times 5^2\times {\mathrm{73}}^1\times {\mathrm{1489}}^1$

素因数の和:1578

約数の個数: 48

約数和(自身を含む): 51270900

約数和(自身を除く): 29531500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 73, 100, 146, 200, 292, 365, 584, 730, 1460, 1489, 1825, 2920, 2978, 3650, 5956, 7300, 7445, 11912, 14600, 14890, 29780, 37225, 59560, 74450, 108697, 148900, 217394, 297800, 434788, 543485, 869576, 1086970, 2173940, 2717425, 4347880, 5434850, 10869700, 21739400]

約数ペア:

[(1, 21739400), (2, 10869700), (4, 5434850), (5, 4347880), (8, 2717425), (10, 2173940), (20, 1086970), (25, 869576), (40, 543485), (50, 434788), (73, 297800), (100, 217394), (146, 148900), (200, 108697), (292, 74450), (365, 59560), (584, 37225), (730, 29780), (1460, 14890), (1489, 14600), (1825, 11912), (2920, 7445), (2978, 7300), (3650, 5956)]