21780770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8609}}^1$

素因数の和:8650

約数の個数: 32

約数和(自身を含む): 44634240

約数和(自身を除く): 22853470

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 8609, 17218, 43045, 86090, 94699, 189398, 198007, 396014, 473495, 946990, 990035, 1980070, 2178077, 4356154, 10890385, 21780770]

約数ペア:

[(1, 21780770), (2, 10890385), (5, 4356154), (10, 2178077), (11, 1980070), (22, 990035), (23, 946990), (46, 473495), (55, 396014), (110, 198007), (115, 189398), (230, 94699), (253, 86090), (506, 43045), (1265, 17218), (2530, 8609)]