79921100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:208

約数の個数: 144

約数和(自身を含む): 213319680

約数和(自身を除く): 133398580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 31, 35, 50, 58, 62, 70, 100, 116, 124, 127, 140, 145, 155, 175, 203, 217, 254, 290, 310, 350, 406, 434, 508, 580, 620, 635, 700, 725, 775, 812, 868, 889, 899, 1015, 1085, 1270, 1450, 1550, 1778, 1798, 2030, 2170, 2540, 2900, 3100, 3175, 3556, 3596, 3683, 3937, 4060, 4340, 4445, 4495, 5075, 5425, 6293, 6350, 7366, 7874, 8890, 8990, 10150, 10850, 12586, 12700, 14732, 15748, 17780, 17980, 18415, 19685, 20300, 21700, 22225, 22475, 25172, 25781, 27559, 31465, 36830, 39370, 44450, 44950, 51562, 55118, 62930, 73660, 78740, 88900, 89900, 92075, 98425, 103124, 110236, 114173, 125860, 128905, 137795, 157325, 184150, 196850, 228346, 257810, 275590, 314650, 368300, 393700, 456692, 515620, 551180, 570865, 629300, 644525, 688975, 799211, 1141730, 1289050, 1377950, 1598422, 2283460, 2578100, 2755900, 2854325, 3196844, 3996055, 5708650, 7992110, 11417300, 15984220, 19980275, 39960550, 79921100]

約数ペア:

[(1, 79921100), (2, 39960550), (4, 19980275), (5, 15984220), (7, 11417300), (10, 7992110), (14, 5708650), (20, 3996055), (25, 3196844), (28, 2854325), (29, 2755900), (31, 2578100), (35, 2283460), (50, 1598422), (58, 1377950), (62, 1289050), (70, 1141730), (100, 799211), (116, 688975), (124, 644525), (127, 629300), (140, 570865), (145, 551180), (155, 515620), (175, 456692), (203, 393700), (217, 368300), (254, 314650), (290, 275590), (310, 257810), (350, 228346), (406, 196850), (434, 184150), (508, 157325), (580, 137795), (620, 128905), (635, 125860), (700, 114173), (725, 110236), (775, 103124), (812, 98425), (868, 92075), (889, 89900), (899, 88900), (1015, 78740), (1085, 73660), (1270, 62930), (1450, 55118), (1550, 51562), (1778, 44950), (1798, 44450), (2030, 39370), (2170, 36830), (2540, 31465), (2900, 27559), (3100, 25781), (3175, 25172), (3556, 22475), (3596, 22225), (3683, 21700), (3937, 20300), (4060, 19685), (4340, 18415), (4445, 17980), (4495, 17780), (5075, 15748), (5425, 14732), (6293, 12700), (6350, 12586), (7366, 10850), (7874, 10150), (8890, 8990)]