21075093

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{619}}^1$

素因数の和:738

約数の個数: 32

約数和(自身を含む): 34025600

約数和(自身を除く): 12950507

約数列:

[1, 3, 9, 13, 27, 39, 97, 117, 291, 351, 619, 873, 1261, 1857, 2619, 3783, 5571, 8047, 11349, 16713, 24141, 34047, 60043, 72423, 180129, 217269, 540387, 780559, 1621161, 2341677, 7025031, 21075093]

約数ペア:

[(1, 21075093), (3, 7025031), (9, 2341677), (13, 1621161), (27, 780559), (39, 540387), (97, 217269), (117, 180129), (291, 72423), (351, 60043), (619, 34047), (873, 24141), (1261, 16713), (1857, 11349), (2619, 8047), (3783, 5571)]