20211457880

素因数分解:

$2^3\times 5^1\times {\mathrm{505286447}}^1$

素因数の和:505286458

約数の個数: 16

約数和(自身を含む): 45475780320

約数和(自身を除く): 25264322440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505286447, 1010572894, 2021145788, 2526432235, 4042291576, 5052864470, 10105728940, 20211457880]

約数ペア:

[(1, 20211457880), (2, 10105728940), (4, 5052864470), (5, 4042291576), (8, 2526432235), (10, 2021145788), (20, 1010572894), (40, 505286447)]