20802645

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{383}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 38817792

約数和(自身を除く): 18015147

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 71, 85, 153, 213, 255, 355, 383, 639, 765, 1065, 1149, 1207, 1915, 3195, 3447, 3621, 5745, 6035, 6511, 10863, 17235, 18105, 19533, 27193, 32555, 54315, 58599, 81579, 97665, 135965, 244737, 292995, 407895, 462281, 1223685, 1386843, 2311405, 4160529, 6934215, 20802645]

約数ペア:

[(1, 20802645), (3, 6934215), (5, 4160529), (9, 2311405), (15, 1386843), (17, 1223685), (45, 462281), (51, 407895), (71, 292995), (85, 244737), (153, 135965), (213, 97665), (255, 81579), (355, 58599), (383, 54315), (639, 32555), (765, 27193), (1065, 19533), (1149, 18105), (1207, 17235), (1915, 10863), (3195, 6511), (3447, 6035), (3621, 5745)]