28784825

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{761}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 38267640

約数和(自身を除く): 9482815

約数列:

[1, 5, 17, 25, 85, 89, 425, 445, 761, 1513, 2225, 3805, 7565, 12937, 19025, 37825, 64685, 67729, 323425, 338645, 1151393, 1693225, 5756965, 28784825]

約数ペア:

[(1, 28784825), (5, 5756965), (17, 1693225), (25, 1151393), (85, 338645), (89, 323425), (425, 67729), (445, 64685), (761, 37825), (1513, 19025), (2225, 12937), (3805, 7565)]