20783475

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1301}}^1$

素因数の和:1388

約数の個数: 36

約数和(自身を含む): 37778832

約数和(自身を除く): 16995357

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1301, 1775, 3195, 3903, 5325, 6505, 11709, 15975, 19515, 32525, 58545, 92371, 97575, 277113, 292725, 461855, 831339, 1385565, 2309275, 4156695, 6927825, 20783475]

約数ペア:

[(1, 20783475), (3, 6927825), (5, 4156695), (9, 2309275), (15, 1385565), (25, 831339), (45, 461855), (71, 292725), (75, 277113), (213, 97575), (225, 92371), (355, 58545), (639, 32525), (1065, 19515), (1301, 15975), (1775, 11709), (3195, 6505), (3903, 5325)]