21262045

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31973}}^1$

素因数の和:32004

約数の個数: 16

約数和(自身を含む): 30695040

約数和(自身を除く): 9432995

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 31973, 159865, 223811, 607487, 1119055, 3037435, 4252409, 21262045]

約数ペア:

[(1, 21262045), (5, 4252409), (7, 3037435), (19, 1119055), (35, 607487), (95, 223811), (133, 159865), (665, 31973)]