20872735

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16901}}^1$

素因数の和:16938

約数の個数: 16

約数和(自身を含む): 28395360

約数和(自身を除く): 7522625

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 16901, 84505, 219713, 321119, 1098565, 1605595, 4174547, 20872735]

約数ペア:

[(1, 20872735), (5, 4174547), (13, 1605595), (19, 1098565), (65, 321119), (95, 219713), (247, 84505), (1235, 16901)]