213584620

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{76829}}^1$

素因数の和:76977

約数の個数: 24

約数和(自身を含む): 451760400

約数和(自身を除く): 238175780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 76829, 153658, 307316, 384145, 768290, 1536580, 10679231, 21358462, 42716924, 53396155, 106792310, 213584620]

約数ペア:

[(1, 213584620), (2, 106792310), (4, 53396155), (5, 42716924), (10, 21358462), (20, 10679231), (139, 1536580), (278, 768290), (556, 384145), (695, 307316), (1390, 153658), (2780, 76829)]