20195280

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4007}}^1$

素因数の和:4033

約数の個数: 120

約数和(自身を含む): 77530752

約数和(自身を除く): 57335472

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, 4007, 5040, 8014, 12021, 16028, 20035, 24042, 28049, 32056, 36063, 40070, 48084, 56098, 60105, 64112, 72126, 80140, 84147, 96168, 112196, 120210, 140245, 144252, 160280, 168294, 180315, 192336, 224392, 240420, 252441, 280490, 288504, 320560, 336588, 360630, 420735, 448784, 480840, 504882, 560980, 577008, 673176, 721260, 841470, 961680, 1009764, 1121960, 1262205, 1346352, 1442520, 1682940, 2019528, 2243920, 2524410, 2885040, 3365880, 4039056, 5048820, 6731760, 10097640, 20195280]

約数ペア:

[(1, 20195280), (2, 10097640), (3, 6731760), (4, 5048820), (5, 4039056), (6, 3365880), (7, 2885040), (8, 2524410), (9, 2243920), (10, 2019528), (12, 1682940), (14, 1442520), (15, 1346352), (16, 1262205), (18, 1121960), (20, 1009764), (21, 961680), (24, 841470), (28, 721260), (30, 673176), (35, 577008), (36, 560980), (40, 504882), (42, 480840), (45, 448784), (48, 420735), (56, 360630), (60, 336588), (63, 320560), (70, 288504), (72, 280490), (80, 252441), (84, 240420), (90, 224392), (105, 192336), (112, 180315), (120, 168294), (126, 160280), (140, 144252), (144, 140245), (168, 120210), (180, 112196), (210, 96168), (240, 84147), (252, 80140), (280, 72126), (315, 64112), (336, 60105), (360, 56098), (420, 48084), (504, 40070), (560, 36063), (630, 32056), (720, 28049), (840, 24042), (1008, 20035), (1260, 16028), (1680, 12021), (2520, 8014), (4007, 5040)]