21999798

素因数分解:

$2^1\times 3^2\times {\mathrm{787}}^1\times {\mathrm{1553}}^1$

素因数の和:2348

約数の個数: 24

約数和(自身を含む): 47757528

約数和(自身を除く): 25757730

約数列:

[1, 2, 3, 6, 9, 18, 787, 1553, 1574, 2361, 3106, 4659, 4722, 7083, 9318, 13977, 14166, 27954, 1222211, 2444422, 3666633, 7333266, 10999899, 21999798]

約数ペア:

[(1, 21999798), (2, 10999899), (3, 7333266), (6, 3666633), (9, 2444422), (18, 1222211), (787, 27954), (1553, 14166), (1574, 13977), (2361, 9318), (3106, 7083), (4659, 4722)]