31151421

素因数分解:

$3^2\times 7^1\times {\mathrm{643}}^1\times {\mathrm{769}}^1$

素因数の和:1425

約数の個数: 24

約数和(自身を含む): 51571520

約数和(自身を除く): 20420099

約数列:

[1, 3, 7, 9, 21, 63, 643, 769, 1929, 2307, 4501, 5383, 5787, 6921, 13503, 16149, 40509, 48447, 494467, 1483401, 3461269, 4450203, 10383807, 31151421]

約数ペア:

[(1, 31151421), (3, 10383807), (7, 4450203), (9, 3461269), (21, 1483401), (63, 494467), (643, 48447), (769, 40509), (1929, 16149), (2307, 13503), (4501, 6921), (5383, 5787)]