21387436

素因数分解:

$2^2\times 7^1\times {\mathrm{419}}^1\times {\mathrm{1823}}^1$

素因数の和:2253

約数の個数: 24

約数和(自身を含む): 42900480

約数和(自身を除く): 21513044

約数列:

[1, 2, 4, 7, 14, 28, 419, 838, 1676, 1823, 2933, 3646, 5866, 7292, 11732, 12761, 25522, 51044, 763837, 1527674, 3055348, 5346859, 10693718, 21387436]

約数ペア:

[(1, 21387436), (2, 10693718), (4, 5346859), (7, 3055348), (14, 1527674), (28, 763837), (419, 51044), (838, 25522), (1676, 12761), (1823, 11732), (2933, 7292), (3646, 5866)]