19812720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2663}}^1$

素因数の和:2710

約数の個数: 80

約数和(自身を含む): 63424512

約数和(自身を除く): 43611792

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 2663, 3720, 5326, 7440, 7989, 10652, 13315, 15978, 21304, 26630, 31956, 39945, 42608, 53260, 63912, 79890, 82553, 106520, 127824, 159780, 165106, 213040, 247659, 319560, 330212, 412765, 495318, 639120, 660424, 825530, 990636, 1238295, 1320848, 1651060, 1981272, 2476590, 3302120, 3962544, 4953180, 6604240, 9906360, 19812720]

約数ペア:

[(1, 19812720), (2, 9906360), (3, 6604240), (4, 4953180), (5, 3962544), (6, 3302120), (8, 2476590), (10, 1981272), (12, 1651060), (15, 1320848), (16, 1238295), (20, 990636), (24, 825530), (30, 660424), (31, 639120), (40, 495318), (48, 412765), (60, 330212), (62, 319560), (80, 247659), (93, 213040), (120, 165106), (124, 159780), (155, 127824), (186, 106520), (240, 82553), (248, 79890), (310, 63912), (372, 53260), (465, 42608), (496, 39945), (620, 31956), (744, 26630), (930, 21304), (1240, 15978), (1488, 13315), (1860, 10652), (2480, 7989), (2663, 7440), (3720, 5326)]