1245642940

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{448073}}^1$

素因数の和:448221

約数の個数: 24

約数和(自身を含む): 2634675120

約数和(自身を除く): 1389032180

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 448073, 896146, 1792292, 2240365, 4480730, 8961460, 62282147, 124564294, 249128588, 311410735, 622821470, 1245642940]

約数ペア:

[(1, 1245642940), (2, 622821470), (4, 311410735), (5, 249128588), (10, 124564294), (20, 62282147), (139, 8961460), (278, 4480730), (556, 2240365), (695, 1792292), (1390, 896146), (2780, 448073)]