20387283

素因数分解:

$3^1\times 7^2\times {\mathrm{331}}^1\times {\mathrm{419}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 31792320

約数和(自身を除く): 11405037

約数列:

[1, 3, 7, 21, 49, 147, 331, 419, 993, 1257, 2317, 2933, 6951, 8799, 16219, 20531, 48657, 61593, 138689, 416067, 970823, 2912469, 6795761, 20387283]

約数ペア:

[(1, 20387283), (3, 6795761), (7, 2912469), (21, 970823), (49, 416067), (147, 138689), (331, 61593), (419, 48657), (993, 20531), (1257, 16219), (2317, 8799), (2933, 6951)]