178920495

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1999}}^1$

素因数の和:2046

約数の個数: 80

約数和(自身を含む): 365904000

約数和(自身を除く): 186983505

約数列:

[1, 3, 5, 9, 13, 15, 17, 27, 39, 45, 51, 65, 81, 85, 117, 135, 153, 195, 221, 255, 351, 405, 459, 585, 663, 765, 1053, 1105, 1377, 1755, 1989, 1999, 2295, 3315, 5265, 5967, 5997, 6885, 9945, 9995, 17901, 17991, 25987, 29835, 29985, 33983, 53973, 77961, 89505, 89955, 101949, 129935, 161919, 169915, 233883, 269865, 305847, 389805, 441779, 509745, 701649, 809595, 917541, 1169415, 1325337, 1529235, 2104947, 2208895, 2752623, 3508245, 3976011, 4587705, 6626685, 10524735, 11928033, 13763115, 19880055, 35784099, 59640165, 178920495]

約数ペア:

[(1, 178920495), (3, 59640165), (5, 35784099), (9, 19880055), (13, 13763115), (15, 11928033), (17, 10524735), (27, 6626685), (39, 4587705), (45, 3976011), (51, 3508245), (65, 2752623), (81, 2208895), (85, 2104947), (117, 1529235), (135, 1325337), (153, 1169415), (195, 917541), (221, 809595), (255, 701649), (351, 509745), (405, 441779), (459, 389805), (585, 305847), (663, 269865), (765, 233883), (1053, 169915), (1105, 161919), (1377, 129935), (1755, 101949), (1989, 89955), (1999, 89505), (2295, 77961), (3315, 53973), (5265, 33983), (5967, 29985), (5997, 29835), (6885, 25987), (9945, 17991), (9995, 17901)]