20353880

素因数分解:

$2^3\times 5^1\times {\mathrm{508847}}^1$

素因数の和:508858

約数の個数: 16

約数和(自身を含む): 45796320

約数和(自身を除く): 25442440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508847, 1017694, 2035388, 2544235, 4070776, 5088470, 10176940, 20353880]

約数ペア:

[(1, 20353880), (2, 10176940), (4, 5088470), (5, 4070776), (8, 2544235), (10, 2035388), (20, 1017694), (40, 508847)]