21469540

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2677}}^1$

素因数の和:3087

約数の個数: 24

約数和(自身を含む): 45215352

約数和(自身を除く): 23745812

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 2677, 4010, 5354, 8020, 10708, 13385, 26770, 53540, 1073477, 2146954, 4293908, 5367385, 10734770, 21469540]

約数ペア:

[(1, 21469540), (2, 10734770), (4, 5367385), (5, 4293908), (10, 2146954), (20, 1073477), (401, 53540), (802, 26770), (1604, 13385), (2005, 10708), (2677, 8020), (4010, 5354)]