21518964

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{8419}}^1$

素因数の和:8500

約数の個数: 36

約数和(自身を含む): 55167840

約数和(自身を除く): 33648876

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 8419, 16838, 25257, 33676, 50514, 75771, 101028, 151542, 303084, 597749, 1195498, 1793247, 2390996, 3586494, 5379741, 7172988, 10759482, 21518964]

約数ペア:

[(1, 21518964), (2, 10759482), (3, 7172988), (4, 5379741), (6, 3586494), (9, 2390996), (12, 1793247), (18, 1195498), (36, 597749), (71, 303084), (142, 151542), (213, 101028), (284, 75771), (426, 50514), (639, 33676), (852, 25257), (1278, 16838), (2556, 8419)]