20175120

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4003}}^1$

素因数の和:4029

約数の個数: 120

約数和(自身を含む): 77453376

約数和(自身を除く): 57278256

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4003, 5040, 8006, 12009, 16012, 20015, 24018, 28021, 32024, 36027, 40030, 48036, 56042, 60045, 64048, 72054, 80060, 84063, 96072, 112084, 120090, 140105, 144108, 160120, 168126, 180135, 192144, 224168, 240180, 252189, 280210, 288216, 320240, 336252, 360270, 420315, 448336, 480360, 504378, 560420, 576432, 672504, 720540, 840630, 960720, 1008756, 1120840, 1260945, 1345008, 1441080, 1681260, 2017512, 2241680, 2521890, 2882160, 3362520, 4035024, 5043780, 6725040, 10087560, 20175120]

約数ペア:

[(1, 20175120), (2, 10087560), (3, 6725040), (4, 5043780), (5, 4035024), (6, 3362520), (7, 2882160), (8, 2521890), (9, 2241680), (10, 2017512), (12, 1681260), (14, 1441080), (15, 1345008), (16, 1260945), (18, 1120840), (20, 1008756), (21, 960720), (24, 840630), (28, 720540), (30, 672504), (35, 576432), (36, 560420), (40, 504378), (42, 480360), (45, 448336), (48, 420315), (56, 360270), (60, 336252), (63, 320240), (70, 288216), (72, 280210), (80, 252189), (84, 240180), (90, 224168), (105, 192144), (112, 180135), (120, 168126), (126, 160120), (140, 144108), (144, 140105), (168, 120090), (180, 112084), (210, 96072), (240, 84063), (252, 80060), (280, 72054), (315, 64048), (336, 60045), (360, 56042), (420, 48036), (504, 40030), (560, 36027), (630, 32024), (720, 28021), (840, 24018), (1008, 20015), (1260, 16012), (1680, 12009), (2520, 8006), (4003, 5040)]