20508015.000000000

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{89003}}^1$

素因数の和:89027

約数の個数: 96

約数和(自身を含む): 833077440

約数和(自身を除く): 608789880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 89003, 178006, 267009, 356012, 445015, 534018, 623021, 712024, 801027, 890030, 1068036, 1246042, 1335045, 1602054, 1780060, 1869063, 2136072, 2492084, 2670090, 3115105, 3204108, 3560120, 3738126, 4005135, 4984168, 5340180, 5607189, 6230210, 6408216, 7476252, 8010270, 9345315, 10680360, 11214378, 12460420, 14952504, 16020540, 18690630, 22428756, 24920840, 28035945, 32041080, 37381260, 44857512, 56071890, 74762520, 112143780, 224287560]

約数ペア:

[(1, 224287560), (2, 112143780), (3, 74762520), (4, 56071890), (5, 44857512), (6, 37381260), (7, 32041080), (8, 28035945), (9, 24920840), (10, 22428756), (12, 18690630), (14, 16020540), (15, 14952504), (18, 12460420), (20, 11214378), (21, 10680360), (24, 9345315), (28, 8010270), (30, 7476252), (35, 6408216), (36, 6230210), (40, 5607189), (42, 5340180), (45, 4984168), (56, 4005135), (60, 3738126), (63, 3560120), (70, 3204108), (72, 3115105), (84, 2670090), (90, 2492084), (105, 2136072), (120, 1869063), (126, 1780060), (140, 1602054), (168, 1335045), (180, 1246042), (210, 1068036), (252, 890030), (280, 801027), (315, 712024), (360, 623021), (420, 534018), (504, 445015), (630, 356012), (840, 267009), (1260, 178006), (2520, 89003)]