19810387440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{27514427}}^1$

素因数の和:27514446

約数の個数: 60

約数和(自身を含む): 66529886904

約数和(自身を除く): 46719499464

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 27514427, 55028854, 82543281, 110057708, 137572135, 165086562, 220115416, 247629843, 275144270, 330173124, 412716405, 440230832, 495259686, 550288540, 660346248, 825432810, 990519372, 1100577080, 1238149215, 1320692496, 1650865620, 1981038744, 2201154160, 2476298430, 3301731240, 3962077488, 4952596860, 6603462480, 9905193720, 19810387440]

約数ペア:

[(1, 19810387440), (2, 9905193720), (3, 6603462480), (4, 4952596860), (5, 3962077488), (6, 3301731240), (8, 2476298430), (9, 2201154160), (10, 1981038744), (12, 1650865620), (15, 1320692496), (16, 1238149215), (18, 1100577080), (20, 990519372), (24, 825432810), (30, 660346248), (36, 550288540), (40, 495259686), (45, 440230832), (48, 412716405), (60, 330173124), (72, 275144270), (80, 247629843), (90, 220115416), (120, 165086562), (144, 137572135), (180, 110057708), (240, 82543281), (360, 55028854), (720, 27514427)]