19166931

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{991}}^1$

素因数の和:1311

約数の個数: 24

約数和(自身を含む): 31775744

約数和(自身を除く): 12608813

約数列:

[1, 3, 7, 9, 21, 63, 307, 921, 991, 2149, 2763, 2973, 6447, 6937, 8919, 19341, 20811, 62433, 304237, 912711, 2129659, 2738133, 6388977, 19166931]

約数ペア:

[(1, 19166931), (3, 6388977), (7, 2738133), (9, 2129659), (21, 912711), (63, 304237), (307, 62433), (921, 20811), (991, 19341), (2149, 8919), (2763, 6937), (2973, 6447)]