20209860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:258

約数の個数: 144

約数和(自身を含む): 68402880

約数和(自身を除く): 48193020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 59, 60, 66, 90, 99, 110, 118, 132, 165, 173, 177, 180, 198, 220, 236, 295, 330, 346, 354, 396, 495, 519, 531, 590, 649, 660, 692, 708, 865, 885, 990, 1038, 1062, 1180, 1298, 1557, 1730, 1770, 1903, 1947, 1980, 2076, 2124, 2595, 2596, 2655, 3114, 3245, 3460, 3540, 3806, 3894, 5190, 5310, 5709, 5841, 6228, 6490, 7612, 7785, 7788, 9515, 9735, 10207, 10380, 10620, 11418, 11682, 12980, 15570, 17127, 19030, 19470, 20414, 22836, 23364, 28545, 29205, 30621, 31140, 34254, 38060, 38940, 40828, 51035, 57090, 58410, 61242, 68508, 85635, 91863, 102070, 112277, 114180, 116820, 122484, 153105, 171270, 183726, 204140, 224554, 306210, 336831, 342540, 367452, 449108, 459315, 561385, 612420, 673662, 918630, 1010493, 1122770, 1347324, 1684155, 1837260, 2020986, 2245540, 3368310, 4041972, 5052465, 6736620, 10104930, 20209860]

約数ペア:

[(1, 20209860), (2, 10104930), (3, 6736620), (4, 5052465), (5, 4041972), (6, 3368310), (9, 2245540), (10, 2020986), (11, 1837260), (12, 1684155), (15, 1347324), (18, 1122770), (20, 1010493), (22, 918630), (30, 673662), (33, 612420), (36, 561385), (44, 459315), (45, 449108), (55, 367452), (59, 342540), (60, 336831), (66, 306210), (90, 224554), (99, 204140), (110, 183726), (118, 171270), (132, 153105), (165, 122484), (173, 116820), (177, 114180), (180, 112277), (198, 102070), (220, 91863), (236, 85635), (295, 68508), (330, 61242), (346, 58410), (354, 57090), (396, 51035), (495, 40828), (519, 38940), (531, 38060), (590, 34254), (649, 31140), (660, 30621), (692, 29205), (708, 28545), (865, 23364), (885, 22836), (990, 20414), (1038, 19470), (1062, 19030), (1180, 17127), (1298, 15570), (1557, 12980), (1730, 11682), (1770, 11418), (1903, 10620), (1947, 10380), (1980, 10207), (2076, 9735), (2124, 9515), (2595, 7788), (2596, 7785), (2655, 7612), (3114, 6490), (3245, 6228), (3460, 5841), (3540, 5709), (3806, 5310), (3894, 5190)]