20213492

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:576

約数の個数: 48

約数和(自身を含む): 41160000

約数和(自身を除く): 20946508

約数列:

[1, 2, 4, 13, 19, 26, 38, 41, 52, 76, 82, 164, 247, 494, 499, 533, 779, 988, 998, 1066, 1558, 1996, 2132, 3116, 6487, 9481, 10127, 12974, 18962, 20254, 20459, 25948, 37924, 40508, 40918, 81836, 123253, 246506, 265967, 388721, 493012, 531934, 777442, 1063868, 1554884, 5053373, 10106746, 20213492]

約数ペア:

[(1, 20213492), (2, 10106746), (4, 5053373), (13, 1554884), (19, 1063868), (26, 777442), (38, 531934), (41, 493012), (52, 388721), (76, 265967), (82, 246506), (164, 123253), (247, 81836), (494, 40918), (499, 40508), (533, 37924), (779, 25948), (988, 20459), (998, 20254), (1066, 18962), (1558, 12974), (1996, 10127), (2132, 9481), (3116, 6487)]