21328972

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{12911}}^1$

素因数の和:12981

約数の個数: 24

約数和(自身を含む): 43384320

約数和(自身を除く): 22055348

約数列:

[1, 2, 4, 7, 14, 28, 59, 118, 236, 413, 826, 1652, 12911, 25822, 51644, 90377, 180754, 361508, 761749, 1523498, 3046996, 5332243, 10664486, 21328972]

約数ペア:

[(1, 21328972), (2, 10664486), (4, 5332243), (7, 3046996), (14, 1523498), (28, 761749), (59, 361508), (118, 180754), (236, 90377), (413, 51644), (826, 25822), (1652, 12911)]