20169380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1871}}^1$

素因数の和:1905

約数の個数: 72

約数和(自身を含む): 53778816

約数和(自身を除く): 33609436

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 1871, 2156, 2695, 3742, 5390, 7484, 9355, 10780, 13097, 18710, 20581, 26194, 37420, 41162, 52388, 65485, 82324, 91679, 102905, 130970, 144067, 183358, 205810, 261940, 288134, 366716, 411620, 458395, 576268, 720335, 916790, 1008469, 1440670, 1833580, 2016938, 2881340, 4033876, 5042345, 10084690, 20169380]

約数ペア:

[(1, 20169380), (2, 10084690), (4, 5042345), (5, 4033876), (7, 2881340), (10, 2016938), (11, 1833580), (14, 1440670), (20, 1008469), (22, 916790), (28, 720335), (35, 576268), (44, 458395), (49, 411620), (55, 366716), (70, 288134), (77, 261940), (98, 205810), (110, 183358), (140, 144067), (154, 130970), (196, 102905), (220, 91679), (245, 82324), (308, 65485), (385, 52388), (490, 41162), (539, 37420), (770, 26194), (980, 20581), (1078, 18710), (1540, 13097), (1871, 10780), (2156, 9355), (2695, 7484), (3742, 5390)]