21281056

素因数分解:

$2^5\times {\mathrm{431}}^1\times {\mathrm{1543}}^1$

素因数の和:1984

約数の個数: 24

約数和(自身を含む): 42021504

約数和(自身を除く): 20740448

約数列:

[1, 2, 4, 8, 16, 32, 431, 862, 1543, 1724, 3086, 3448, 6172, 6896, 12344, 13792, 24688, 49376, 665033, 1330066, 2660132, 5320264, 10640528, 21281056]

約数ペア:

[(1, 21281056), (2, 10640528), (4, 5320264), (8, 2660132), (16, 1330066), (32, 665033), (431, 49376), (862, 24688), (1543, 13792), (1724, 12344), (3086, 6896), (3448, 6172)]