21062988

素因数分解:

$2^2\times 3^2\times {\mathrm{521}}^1\times {\mathrm{1123}}^1$

素因数の和:1654

約数の個数: 36

約数和(自身を含む): 53392248

約数和(自身を除く): 32329260

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 521, 1042, 1123, 1563, 2084, 2246, 3126, 3369, 4492, 4689, 6252, 6738, 9378, 10107, 13476, 18756, 20214, 40428, 585083, 1170166, 1755249, 2340332, 3510498, 5265747, 7020996, 10531494, 21062988]

約数ペア:

[(1, 21062988), (2, 10531494), (3, 7020996), (4, 5265747), (6, 3510498), (9, 2340332), (12, 1755249), (18, 1170166), (36, 585083), (521, 40428), (1042, 20214), (1123, 18756), (1563, 13476), (2084, 10107), (2246, 9378), (3126, 6738), (3369, 6252), (4492, 4689)]