28820975

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{18899}}^1$

素因数の和:18970

約数の個数: 12

約数和(自身を含む): 36325800

約数和(自身を除く): 7504825

約数列:

[1, 5, 25, 61, 305, 1525, 18899, 94495, 472475, 1152839, 5764195, 28820975]

約数ペア:

[(1, 28820975), (5, 5764195), (25, 1152839), (61, 472475), (305, 94495), (1525, 18899)]