20808630840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{359}}^1\times {\mathrm{21001}}^1$

素因数の和:21397

約数の個数: 128

約数和(自身を含む): 65324620800

約数和(自身を除く): 44515989960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 359, 460, 552, 690, 718, 920, 1077, 1380, 1436, 1795, 2154, 2760, 2872, 3590, 4308, 5385, 7180, 8257, 8616, 10770, 14360, 16514, 21001, 21540, 24771, 33028, 41285, 42002, 43080, 49542, 63003, 66056, 82570, 84004, 99084, 105005, 123855, 126006, 165140, 168008, 198168, 210010, 247710, 252012, 315015, 330280, 420020, 483023, 495420, 504024, 630030, 840040, 966046, 990840, 1260060, 1449069, 1932092, 2415115, 2520120, 2898138, 3864184, 4830230, 5796276, 7245345, 7539359, 9660460, 11592552, 14490690, 15078718, 19320920, 22618077, 28981380, 30157436, 37696795, 45236154, 57962760, 60314872, 75393590, 90472308, 113090385, 150787180, 173405257, 180944616, 226180770, 301574360, 346810514, 452361540, 520215771, 693621028, 867026285, 904723080, 1040431542, 1387242056, 1734052570, 2080863084, 2601078855, 3468105140, 4161726168, 5202157710, 6936210280, 10404315420, 20808630840]

約数ペア:

[(1, 20808630840), (2, 10404315420), (3, 6936210280), (4, 5202157710), (5, 4161726168), (6, 3468105140), (8, 2601078855), (10, 2080863084), (12, 1734052570), (15, 1387242056), (20, 1040431542), (23, 904723080), (24, 867026285), (30, 693621028), (40, 520215771), (46, 452361540), (60, 346810514), (69, 301574360), (92, 226180770), (115, 180944616), (120, 173405257), (138, 150787180), (184, 113090385), (230, 90472308), (276, 75393590), (345, 60314872), (359, 57962760), (460, 45236154), (552, 37696795), (690, 30157436), (718, 28981380), (920, 22618077), (1077, 19320920), (1380, 15078718), (1436, 14490690), (1795, 11592552), (2154, 9660460), (2760, 7539359), (2872, 7245345), (3590, 5796276), (4308, 4830230), (5385, 3864184), (7180, 2898138), (8257, 2520120), (8616, 2415115), (10770, 1932092), (14360, 1449069), (16514, 1260060), (21001, 990840), (21540, 966046), (24771, 840040), (33028, 630030), (41285, 504024), (42002, 495420), (43080, 483023), (49542, 420020), (63003, 330280), (66056, 315015), (82570, 252012), (84004, 247710), (99084, 210010), (105005, 198168), (123855, 168008), (126006, 165140)]