20564475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{127}}^2$

素因数の和:284

約数の個数: 36

約数和(自身を含む): 36285624

約数和(自身を除く): 15721149

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 127, 255, 381, 425, 635, 1275, 1905, 2159, 3175, 6477, 9525, 10795, 16129, 32385, 48387, 53975, 80645, 161925, 241935, 274193, 403225, 822579, 1209675, 1370965, 4112895, 6854825, 20564475]

約数ペア:

[(1, 20564475), (3, 6854825), (5, 4112895), (15, 1370965), (17, 1209675), (25, 822579), (51, 403225), (75, 274193), (85, 241935), (127, 161925), (255, 80645), (381, 53975), (425, 48387), (635, 32385), (1275, 16129), (1905, 10795), (2159, 9525), (3175, 6477)]