21872620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2029}}^1$

素因数の和:2063

約数の個数: 72

約数和(自身を含む): 58317840

約数和(自身を除く): 36445220

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, 2029, 2156, 2695, 4058, 5390, 8116, 10145, 10780, 14203, 20290, 22319, 28406, 40580, 44638, 56812, 71015, 89276, 99421, 111595, 142030, 156233, 198842, 223190, 284060, 312466, 397684, 446380, 497105, 624932, 781165, 994210, 1093631, 1562330, 1988420, 2187262, 3124660, 4374524, 5468155, 10936310, 21872620]

約数ペア:

[(1, 21872620), (2, 10936310), (4, 5468155), (5, 4374524), (7, 3124660), (10, 2187262), (11, 1988420), (14, 1562330), (20, 1093631), (22, 994210), (28, 781165), (35, 624932), (44, 497105), (49, 446380), (55, 397684), (70, 312466), (77, 284060), (98, 223190), (110, 198842), (140, 156233), (154, 142030), (196, 111595), (220, 99421), (245, 89276), (308, 71015), (385, 56812), (490, 44638), (539, 40580), (770, 28406), (980, 22319), (1078, 20290), (1540, 14203), (2029, 10780), (2156, 10145), (2695, 8116), (4058, 5390)]