20089905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{389}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 35268480

約数和(自身を除く): 15178575

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 313, 389, 939, 1167, 1565, 1945, 3443, 4279, 4695, 5835, 10329, 12837, 17215, 21395, 51645, 64185, 121757, 365271, 608785, 1339327, 1826355, 4017981, 6696635, 20089905]

約数ペア:

[(1, 20089905), (3, 6696635), (5, 4017981), (11, 1826355), (15, 1339327), (33, 608785), (55, 365271), (165, 121757), (313, 64185), (389, 51645), (939, 21395), (1167, 17215), (1565, 12837), (1945, 10329), (3443, 5835), (4279, 4695)]