15965000

素因数分解:

$2^3\times 5^4\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:160

約数の個数: 80

約数和(自身を含む): 38987520

約数和(自身を除く): 23022520

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 103, 124, 125, 155, 200, 206, 248, 250, 310, 412, 500, 515, 620, 625, 775, 824, 1000, 1030, 1240, 1250, 1550, 2060, 2500, 2575, 3100, 3193, 3875, 4120, 5000, 5150, 6200, 6386, 7750, 10300, 12772, 12875, 15500, 15965, 19375, 20600, 25544, 25750, 31000, 31930, 38750, 51500, 63860, 64375, 77500, 79825, 103000, 127720, 128750, 155000, 159650, 257500, 319300, 399125, 515000, 638600, 798250, 1596500, 1995625, 3193000, 3991250, 7982500, 15965000]

約数ペア:

[(1, 15965000), (2, 7982500), (4, 3991250), (5, 3193000), (8, 1995625), (10, 1596500), (20, 798250), (25, 638600), (31, 515000), (40, 399125), (50, 319300), (62, 257500), (100, 159650), (103, 155000), (124, 128750), (125, 127720), (155, 103000), (200, 79825), (206, 77500), (248, 64375), (250, 63860), (310, 51500), (412, 38750), (500, 31930), (515, 31000), (620, 25750), (625, 25544), (775, 20600), (824, 19375), (1000, 15965), (1030, 15500), (1240, 12875), (1250, 12772), (1550, 10300), (2060, 7750), (2500, 6386), (2575, 6200), (3100, 5150), (3193, 5000), (3875, 4120)]