28439900

素因数分解:

$2^2\times 5^2\times {\mathrm{191}}^1\times {\mathrm{1489}}^1$

素因数の和:1694

約数の個数: 36

約数和(自身を含む): 62079360

約数和(自身を除く): 33639460

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 191, 382, 764, 955, 1489, 1910, 2978, 3820, 4775, 5956, 7445, 9550, 14890, 19100, 29780, 37225, 74450, 148900, 284399, 568798, 1137596, 1421995, 2843990, 5687980, 7109975, 14219950, 28439900]

約数ペア:

[(1, 28439900), (2, 14219950), (4, 7109975), (5, 5687980), (10, 2843990), (20, 1421995), (25, 1137596), (50, 568798), (100, 284399), (191, 148900), (382, 74450), (764, 37225), (955, 29780), (1489, 19100), (1910, 14890), (2978, 9550), (3820, 7445), (4775, 5956)]