21765100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:128

約数の個数: 144

約数和(自身を含む): 59996160

約数和(自身を除く): 38231060

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 25, 28, 31, 34, 35, 50, 59, 62, 68, 70, 85, 100, 118, 119, 124, 140, 155, 170, 175, 217, 236, 238, 295, 310, 340, 350, 413, 425, 434, 476, 527, 590, 595, 620, 700, 775, 826, 850, 868, 1003, 1054, 1085, 1180, 1190, 1475, 1550, 1652, 1700, 1829, 2006, 2065, 2108, 2170, 2380, 2635, 2950, 2975, 3100, 3658, 3689, 4012, 4130, 4340, 5015, 5270, 5425, 5900, 5950, 7021, 7316, 7378, 8260, 9145, 10030, 10325, 10540, 10850, 11900, 12803, 13175, 14042, 14756, 18290, 18445, 20060, 20650, 21700, 25075, 25606, 26350, 28084, 31093, 35105, 36580, 36890, 41300, 45725, 50150, 51212, 52700, 62186, 64015, 70210, 73780, 91450, 92225, 100300, 124372, 128030, 140420, 155465, 175525, 182900, 184450, 217651, 256060, 310930, 320075, 351050, 368900, 435302, 621860, 640150, 702100, 777325, 870604, 1088255, 1280300, 1554650, 2176510, 3109300, 4353020, 5441275, 10882550, 21765100]

約数ペア:

[(1, 21765100), (2, 10882550), (4, 5441275), (5, 4353020), (7, 3109300), (10, 2176510), (14, 1554650), (17, 1280300), (20, 1088255), (25, 870604), (28, 777325), (31, 702100), (34, 640150), (35, 621860), (50, 435302), (59, 368900), (62, 351050), (68, 320075), (70, 310930), (85, 256060), (100, 217651), (118, 184450), (119, 182900), (124, 175525), (140, 155465), (155, 140420), (170, 128030), (175, 124372), (217, 100300), (236, 92225), (238, 91450), (295, 73780), (310, 70210), (340, 64015), (350, 62186), (413, 52700), (425, 51212), (434, 50150), (476, 45725), (527, 41300), (590, 36890), (595, 36580), (620, 35105), (700, 31093), (775, 28084), (826, 26350), (850, 25606), (868, 25075), (1003, 21700), (1054, 20650), (1085, 20060), (1180, 18445), (1190, 18290), (1475, 14756), (1550, 14042), (1652, 13175), (1700, 12803), (1829, 11900), (2006, 10850), (2065, 10540), (2108, 10325), (2170, 10030), (2380, 9145), (2635, 8260), (2950, 7378), (2975, 7316), (3100, 7021), (3658, 5950), (3689, 5900), (4012, 5425), (4130, 5270), (4340, 5015)]