20985153605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1\times {\mathrm{16547}}^1$

素因数の和:16853

約数の個数: 32

約数和(自身を含む): 27522633600

約数和(自身を除く): 6537479995

約数列:

[1, 5, 13, 65, 109, 179, 545, 895, 1417, 2327, 7085, 11635, 16547, 19511, 82735, 97555, 215111, 253643, 1075555, 1268215, 1803623, 2961913, 9018115, 14809565, 23447099, 38504869, 117235495, 192524345, 322848517, 1614242585, 4197030721, 20985153605]

約数ペア:

[(1, 20985153605), (5, 4197030721), (13, 1614242585), (65, 322848517), (109, 192524345), (179, 117235495), (545, 38504869), (895, 23447099), (1417, 14809565), (2327, 9018115), (7085, 2961913), (11635, 1803623), (16547, 1268215), (19511, 1075555), (82735, 253643), (97555, 215111)]