21211616

素因数分解:

$2^5\times {\mathrm{101}}^1\times {\mathrm{6563}}^1$

素因数の和:6674

約数の個数: 24

約数和(自身を含む): 42180264

約数和(自身を除く): 20968648

約数列:

[1, 2, 4, 8, 16, 32, 101, 202, 404, 808, 1616, 3232, 6563, 13126, 26252, 52504, 105008, 210016, 662863, 1325726, 2651452, 5302904, 10605808, 21211616]

約数ペア:

[(1, 21211616), (2, 10605808), (4, 5302904), (8, 2651452), (16, 1325726), (32, 662863), (101, 210016), (202, 105008), (404, 52504), (808, 26252), (1616, 13126), (3232, 6563)]