20510280

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2713}}^1$

素因数の和:2740

約数の個数: 128

約数和(自身を含む): 78163200

約数和(自身を除く): 57652920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2713, 3780, 5426, 7560, 8139, 10852, 13565, 16278, 18991, 21704, 24417, 27130, 32556, 37982, 40695, 48834, 54260, 56973, 65112, 73251, 75964, 81390, 94955, 97668, 108520, 113946, 122085, 146502, 151928, 162780, 170919, 189910, 195336, 227892, 244170, 284865, 293004, 325560, 341838, 366255, 379820, 455784, 488340, 512757, 569730, 586008, 683676, 732510, 759640, 854595, 976680, 1025514, 1139460, 1367352, 1465020, 1709190, 2051028, 2278920, 2563785, 2930040, 3418380, 4102056, 5127570, 6836760, 10255140, 20510280]

約数ペア:

[(1, 20510280), (2, 10255140), (3, 6836760), (4, 5127570), (5, 4102056), (6, 3418380), (7, 2930040), (8, 2563785), (9, 2278920), (10, 2051028), (12, 1709190), (14, 1465020), (15, 1367352), (18, 1139460), (20, 1025514), (21, 976680), (24, 854595), (27, 759640), (28, 732510), (30, 683676), (35, 586008), (36, 569730), (40, 512757), (42, 488340), (45, 455784), (54, 379820), (56, 366255), (60, 341838), (63, 325560), (70, 293004), (72, 284865), (84, 244170), (90, 227892), (105, 195336), (108, 189910), (120, 170919), (126, 162780), (135, 151928), (140, 146502), (168, 122085), (180, 113946), (189, 108520), (210, 97668), (216, 94955), (252, 81390), (270, 75964), (280, 73251), (315, 65112), (360, 56973), (378, 54260), (420, 48834), (504, 40695), (540, 37982), (630, 32556), (756, 27130), (840, 24417), (945, 21704), (1080, 18991), (1260, 16278), (1512, 13565), (1890, 10852), (2520, 8139), (2713, 7560), (3780, 5426)]